中文翻译与英英解释 | any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
同义词：ragweed, ambrosia,
| | widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States
同义词：oxtongue, bristly oxtongue, bugloss, Picris echioides,
|
|