单词 | 豚草 |
释义 | 〔ragweed〕Any of various weeds of the genusAmbrosia having small, greenish, unisexual flower heads and producing abundant pollen that is one of the chief causes of hay fever. 豚草:一种豚草 属的杂草,有绿色、单性花朵,能产大量花粉,是引起花粉热的主要原因之一 |
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