单词:alculigenes foecalis
粪桿菌
单词:alculigenes foecalis 相关文章
By David McAlary Washington 02 May 2007 U.S. researchers have discovered a gene that promotes longer life in earthworms that eat much less than normal. Humans have similar genes, and VOA's David McAlary reports that, if they work the same way as in t
发表于:2019-02-06 / 阅读(101) / 评论(0)
2007年VOA标准英语(五月)
图片1 图片2 图片3
发表于:2019-03-02 / 阅读(274) / 评论(0)
加州语文教材California Treasures G4