单词：ragweed
音标：['ræ^wi:d] ；
n. 豚草
[医] 豚草, 豕草
[医] 豚草, 豕草
n. any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
词型变化：名词复数形式 : ragweeds
词性分布：
ragweed的用法和样例：
词汇搭配
- ragweed pollen豚草花粉
- whole ragweed extract全豚草浸出物, 豚草...
【近义词】
- benweed千里光属
- ragwort[植]千里光
- Senecio jacobaea美狗舌草
- tansy ragwort千里光
- bitterweed美洲的几种含有苦素的植物...
- ambrosia神的食物
单词：ragweed 相关文章
Mary Morningstar Cross Canadian Ragweed formed in 1994, and spent the next eight years building a regional fan base in the southwestern U.S. The Oklahoma-based band released four albums on its own lab
发表于:2019-01-03 / 阅读(196) / 评论(0)
VOA2004（上）--艺术专集
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By Jessica Berman Washington 05 October 2006 U.S. researchers have developed a vaccine that offers protection against a common allergy trigger in the United States known as ragweed. Scientists say the development has the potential to guard against a
发表于:2019-01-10 / 阅读(212) / 评论(0)
2006年VOA标准英语（十月）
2006年VOA标准英语（十月）