| 单词 | western ragweed |
| 释义 | western ragweed (extremely rare) n WORD FAMILY western ragweed n coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico Syn|Hyper Ambrosia psilostachya, perennial ragweed 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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