911chaxun查询·英语单词大全
名词胚叶，胚层
1. 胚叶：germ free animal 无菌动物 | germ layer 胚叶 | germ line 种系
2. 胚层,胚盘,生殖层：germ insecticide ==> 细菌杀虫剂 | germ layer ==> 胚层,胚盘,生殖层 | germ layer formation ==> 胚层形成
noun
1. (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation