a是什么意思 a怎么读
英式：[eɪ]
美式：[eɪ]
CET4、CET6
a单词基本解析：
art.一（个）; 每一（个）; 任一（个）art.一(个), 每一(个), 任一（个）
art.一（个）；每一（个）；任一（个）；
a变化用词：
名词复数: a's |
a英英释义：
Noun1. the blood group whose red cells carry the A antigen
2. a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
3. any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
4. one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
5. (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
6. the basic unit of electric current adopted under the Systeme International d'Unites;
"a typical household circuit carries 15 to 50 amps"
7. the 1st letter of the Roman alphabet
名词 a:
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
同义词：angstrom, angstrom unit
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
同义词：vitamin A, antiophthalmic factor, axerophthol
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
同义词：deoxyadenosine monophosphate
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
同义词：adenine
the basic unit of electric current adopted under the Systeme International d'Unites
同义词：ampere, amp
the 1st letter of the Roman alphabet
同义词：letter a
the blood group whose red cells carry the A antigen
同义词：type A, group A
a[ ei ]n.a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
同义词：angstromangstrom unit
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes同义词：vitamin Aantiophthalmic factoraxerophthol
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)同义词：deoxyadenosine monophosphate
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA同义词：adenine
the basic unit of electric current adopted under the Systeme International d'Unites"a typical household circuit carries 15 to 50 amps"
同义词：ampereamp
the 1st letter of the Roman alphabet同义词：letter a
the blood group whose red cells carry the A antigen同义词：type Agroup A
a中文词源：
a用法和例句：
a good knowledge of French
精通法语
I can only carry two at a time.
我一次只能带两个。
There's a visitor for you.
有位客人找你。
She's a friend of my father's (= one of my father's friends) .
她是我父亲的一位朋友。
a man/horse/unit
一个人；一匹马；一个单位
an aunt/egg/hour/x-ray
一个姑母；一个鸡蛋；一小时；一张X光片
...a quarter of an hour...
一刻钟
Prices start at £13.95 a metre for printed cotton...
印花棉布以每米13.95英镑的价格起售。
The helicopter can zip along at about 150 kilometres an hour.
该直升机能以每小时150公里左右的速度疾进。
Most people have very little difficulty in seeing why a Van Gogh is a work of genius.
多数人不难理解为什么凡·高的作品是天才之作。
...more than a thousand acres of land.
1,000多英亩地
The full address on a stick-on label was that of a Mrs P. R. Slater of Peterborough...
不干胶标签上的完整地址写的是彼得伯勒的一位P. R. 斯莱特太太。
A Dr Matthew Owens was reported missing while on an expedition to north-eastern Turkey.
据报道，一位叫马修·欧文斯的博士在前往土耳其东北部考察的途中失踪了。
When I listen to her play I can hear a new Nigel Kennedy.
从她的演奏中我听出了新一代的奈杰尔·肯尼迪。
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。
I explained that I was an artist...
我解释说自己是个艺术家。
He was now a teacher and a respectable member of the community.
他现在是一位教师，并且是社区内受人尊敬的一员。
It was a Christmas when shoppers passed by expensive silks in favor of more practical gifts.
这是一个购物者不理会昂贵的丝绸衣服而热衷于更实用礼物的圣诞节。
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。
He did have a real knowledge of the country...
他对该国的确知之甚多。
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。
I've come looking for a bit of advice.
我特来讨教。
Some parents believe a boy must learn to stand up and fight like a man.
有些父母认为男孩子必须学会像男子汉一样顶天立地，勇于抗争。
...the operation a patient has had.
病人做过的手术
The interview took place on a Friday afternoon...
采访是在一个星期五的下午进行的。
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品
I suggest you leave it to an expert...
我建议你把它留给专家来解决。
A waiter entered with a tray...
侍者端着托盘进来了。
He started eating an apple...
他开始吃苹果。
a
A country must have the will to repel any invader.
一个国家得有决心击退任何入侵者。
A new upsurge in construction is in the making.
一个建设的新高潮正在兴起。
A syndicate of local businessmen is bidding for the contract.
一个当地企业家的联合组织在向这一合同投标。
A man appeared at the castle gate in the guise of a woodcutter.
一个男子打扮成樵夫的模样出现在城堡的门口。
A peevish child is unhappy and makes others unhappy.
一个脾气暴躁的孩子自己不高兴也使别人不高兴。
It's natural to slack2 off towards the end of a hard day's work.
一天紧张工作快结束的时候有些放松是自然的。
He twisted up with a sudden stab of pain.
一阵突然的剧疼使他挺不起身来。
I got a new coat in that store last week.
上礼拜我在那家店买了一件新外套。
That is not, properly speaking, a dictionary, but a grammar.
严格说来; 那不是一本词典，而是一本语法书。
His strength in a crisis is an ace in the hole.
临危不惧是他的看家本领。
It may take a long time to find a solution to the problem.
也许要花很长时间才能找到解决这个问题的办法。
As a matter of fact, I've never been there before.
事实上我从未到过那儿。
He had had a blackout after the accident.
事故发生后，他晕过去一阵子。
A cloud is a mass of vapor in the sky.
云是天空中的水汽团。
It's a tight squeeze to get five people in that small car.
五个人坐在那个小车子里真是太挤了。
Our firm is likely to reap a big profit this year.
今年我们公司很可能获得巨额利润。
The bank is a ten minutes' run from the hotel.
从旅馆到银行跑步需十分钟。
Economically, the country is in a very healthy state.
从经济学的观点来说，国家处于很兴旺的状态之中。
He took out a fire insurance policy for his house.
他为自己的房子办理了一份火险保险单。
He got a lot of dope from the secretary.
他从秘书那里获得许多内部消息。
He bounced into the room with a springy step.
他以轻快的跑步跳进房间。
They denounced him to the police as a criminal.
他们向警方告发他是罪犯。
They cleaved a path through the wilderness.
他们在荒原中开辟出一条路。
They all maintained a reverent silence.
他们都保持肃静。
He lugged a heavy handcart along.
他使劲拉走那笨重的手推车。
He pushed hard on the brake pedal to avoid a collision.
他使劲踩下煞车踏板以避免撞车。
He let himself down slowly by means of a tope.
他借助一根绳子慢慢地下来了。
He looks a suspicious character.
他像个可疑的人。
He judged the distance to a nicety.
他判断距离很正确。
He cut off a bunch of grapes to entertain us.
他剪下一串葡萄招待我们。
He talks like a parrot and just repeats what he heard.
他只是鹦鹉学舌，拾人牙慧罢了。
He bit off a large piece of the apple.
他咬下一大块苹果。
He took a lot of flak for his stand against abortion.
他因坚持反对堕胎而饱受责难。
He qualified in London as a teacher of English overseas.
他在伦敦取得了海外英语教师的资格。
He is on a par with his brother in intelligence.
他在智力方面同他的弟弟不相上下。
An idea popped into his mind like a flash.
他头脑里突然闪过一个念头。
His interest in photography is only a passing fad.
他对摄影的爱好仅是一时的兴致。
He tried to put a bold face on his failure.
他对自己的失败装出一副满不在乎的样子。
He has a lot of clout with the board of directors.
他对董事会有很大的影响力。
He has got a lot of mileage out of the shoes.
他已将那双鞋穿够了本钱。
He took sick and died a week later.
他得了病，一周后就死去了。
He is always raising a stink about this, that or the other thing.
他总是为了这个、那个的大吵大闹，什麽事都有得吵，有得闹。
He gave a description of what he had seen.
他描述了他所见到的一切。
He is a very good footballer; you ought to see him in action.
他是一位出色的足球运动员，你应该看他踢球。
He is a great guy, a chip off the old block.
他是一位好人，就像他父亲一样。
He was a dishonor to his regiment.
他是那个团的耻辱。
He has a knack of falling out with everyone.
他有个怪癖，总是和每个人吵架。
She is pounding out a new rune on the piano.
他正在钢琴上弹奏一支新曲。
He has a yen to be alone in a boat.
他渴望独自待在一条船上。
He's such a good swimmer that he makes me look sick.
他游得这么好，真叫我相形见绌。
He cooked the pasta in a large pan of boiling water.
他用一大锅开水煮义大利面食。
His letter irritated me a little.
他的信使我有点恼怒。
His wife was a constant inspiration to him.
他的妻子经常鼓励他。
There is a vein of melancholy in his character.
他的性格中有少许忧郁的气质。
A bright red welt rose on his arm.
他的手臂上起了明显的条状红肿。
He glimpsed at my new watch and said it was a good bargain.
他看了一眼我的新表，说买得很上算。
He is on a lone fun run, nothing to do with the race.
他自己跑著玩的，和竞赛无关。
He describes himself as a doctor.
他自称是医生。
He tried to varnish over the truth with a lie.
他试图用谎言来掩盖真相。
I was paging through a magazine when he came in.
他进来时我在翻阅一本杂志。
The penguin is a flightless bird.
企鹅是一种不会飞的鸟。
A man of great ability like him will eventually reach the top.
像他这样才能出众的人终究会升到最上层的。
The company declared a large dividend at the end of the year.
公司在年底宣布分发高额股息。
As to the author of the book, I will hazard a guess.
关於这本书的作者，我来试猜一下。
It's almost impossible to agree on a unified basic price.
几乎不可能商定一个划一的基本价格。
A few jokes will add a final fillip to your speech.
几句笑话会给你的演说添些生气。
Don't buy a used car from that rogue.
别从那无赖手里买旧车。
I bought a pair of tan leather shoes the other day.
前几天我买了双棕褐色的皮鞋。
Will you partake of a drink with us?
和我们一同喝一杯好吗？
We must settle on a place to meet.
咱们得把见面的地点定下来。
A bowl of hot chicken soup is good for you.
喝一碗热鸡汤对你有好处。
Have a glass of beer to rinse your dinner down.
喝杯啤酒把你吃的晚饭冲下去。
He will sell his house at a sacrifice because he needs money.
因为他缺钱，他将亏本出售他的房子。
In a frenzy of hate he killed his enemy.
在一阵痛恨的狂乱中，他杀死了敌人。
He doubles the parts of a farmhand and a miner.
在这出戏里他既扮演雇农又扮演矿工。
It took me quite a while to fill out the questionnaire.
填写那份问卷花了我好长一段时间。
The college library is a favorite haunt.
大学图书馆是人们喜欢的地方。
The maid did down the walls with a duster.
女佣用掸帚由上而下地刷除四壁上的尘垢。
She rushed out of the house into a whirling snowstorm.
她冲出屋子走进了狂卷着的暴风雪中。
She is a receptionist in a doctor's office.
她在一位医生的诊所中担任接待员。
用作冠词(art.)There is a pen on the table.
桌子上有一支笔。
We have a problem.
我们有个问题。
I can only carry two at a time.
我一次只能带两个。
Let's go to a Chinese restaurant.
我们去一家中餐餐馆。
A cat is an animal.
猫是动物。