Any of several Eurasian plants of the genus Leonurus,especially L. cardiaca,a weed having clusters of small purple or pink flowers and spine-tipped calyx lobes. 益母草，茺蔚任一種生活于歐亞大陸的茺蔚屬植物，尤指山艾屬野草，開(kāi)紫色或粉色小花串，生有尖端有刺的花萼裂片。
While all signs now point to Mexico as the epicenter, the genetic material in the virus there includes part of a swine influenza virus of Eurasian origin. 盡管所有跡象都指出墨西哥是疾病爆發(fā)的中心，但這種病毒的基因物質(zhì)里卻包含了部分起源于歐亞大陸的一種豬流感病毒。
