knapweed单词基本解析：

n.黑矢车菊，矢车菊
n. 矢车菊属的一种
n.黑矢车菊，矢车菊；

knapweed变化用词：

名词: knapper | 动词过去式: knapped | 动词过去分词: knapped | 动词现在分词: knapping | 动词第三人称单数: knaps |

knapweed英英释义：

Noun

1. any of various plants of the genus Centaurea having purple thistlelike flowers

名词 knapweed:

any of various plants of the genus Centaurea having purple thistlelike flowersknapweed[ 'næpwi:d ]n.any of various plants of the genus Centaurea having purple thistlelike flowers

knapweed中文词源：

knapweed用法和例句：

I prefer the daisy and the knapweed in particular.

我特别喜欢雏菊和矢车菊.

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knapweed

creeping knapweed

n. 顶羽菊

I prefer the daisy and the knapweed in particular.

我特别喜欢雏菊和矢车菊。

The spotted knapweed is an intruder from eastern Europe that over the past century has displaced indigenous grasses and degraded pastures in North America.

斑点矢车菊这种来自东欧的侵略者，在过去一个世纪中已取代北美洲的原生野草，并危害到牧草的生长。

Agapeta zoegana - Information about use of this root boring moth from Europe in the United States to control knapweed.

易易工作室-各种在线工具，站长网志，以及多个应用项目。

Pearson says that this exacerbation of the invasive species' impact has a lot to do with the effectiveness of the fly at controlling the knapweed.

皮尔逊说，这加剧了外来物种的影响已经有很多事情要做的有效性在飞行控制knapweed 。

Investigators have found that the knapweed's roots exude a toxin that builds up in the soil.

研究者发现，这种矢车菊根部分泌的一种毒素会渗进土壤里，使得其他植物的细胞大量死亡，并抑制萌芽与生长。

knapweed; star thistle.

黑矢车菊矢车菊；矢车菊属的各种植物的任一种。

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