| 释义 |
〔silkworm〕Any of various caterpillars that produce silk cocoons, especially the larva of a moth(Bombyx mori) native to Asia that spins a cocoon of fine, strong, lustrous fiber that is the source of commercial silk. 蚕:一种能产丝茧的毛虫,尤指原产于亚洲的蛾的幼虫(家蚕 蚕属) ,这种幼虫能织出精细的、坚韧而有光泽的纤维茧,这种茧是商业性丝绸的来源 〔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 〔up〕seed that yields up to 300 bushels per acre.每英亩能产三百蒲式耳的种子 |