up-and-down单词基本解析：

adj.上上下下的; 起伏的; 来来往往的; 变动的
adj. 上上下下的, 起伏的, 来来往往的, 变动的
adj.上上下下的；起伏的；来来往往的；变动的

up-and-down变化用词：

名词: up-and-comer |

up-and-down英英释义：

副词 up-and-down:

moving backward and forward along a given course

同义词：up and down

alternately upward and downward

同义词：up and down

up and down[ 'ʌpən'daun ]adv.moving backward and forward along a given course

同义词：up and down

alternately upward and downward

同义词：up and down

up-and-down中文词源：

up-and-down用法和例句：

up-and-down

用作形容词(adj.)

All over the ship the bulkheads sweated a film of oil and water.
船里上上下下的舱壁到处沾着一层油水。

The landscape is made up of low, rolling hills.
此地的地貌为低矮起伏的丘陵。

She watched the gentle rise and fall of his chest as he slept.
她看着他睡着时微微起伏的胸膛。

He put up a notice about the change in price.
他张贴一则有关价格变动的布告。

New words and meanings keep the English language in a state of flux.
新的字和新的字义使英语处于不断变动的情况中。

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