1. 含有苦素的植物(如豚草等)：bittersweet || 又苦又甜的, 苦乐参半的 | bitterweed || 含有苦素的植物(如豚草等) | Bittner milk factor || 毕特纳乳因子
1. Genus of weedy Old World yellow-flowered herbs usually containing a bitter-tasting substance: bitterweed.
旧大陆一个草本属，生长茂盛，黄花，常含苦素；美洲的几种含有苦素的植物的任一种。
noun
1. any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
2. \u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD
2. widespread European weed with spiny tongue-shaped leaves and yellow flowers
naturalized in United States
Synonym: oxtongue bristly oxtongue bugloss Picris echioides