| 单词 | great ragweed |
| 释义 | great ragweed (once / 3939771 pages) n WORD FAMILY great ragweed n a coarse annual with some leaves deeply and palmately three-cleft or five-cleft Syn|Hyper Ambrosia trifida ambrosia, bitterweed, ragweed any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma |
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