| 单词 | chorion |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔chorionic villus〕One of the minute vascular projections of the fetal chorion that combines with maternal uterine tissue to form the placenta.绒毛膜绒毛：是一种具有微血管的胎膜的突出物，由母亲的子宫组织组成，用以形成胎盘美国传统〔embryonic membrane〕Any of the membranous structures closely associated with or surrounding a developing vertebrate embryo, including the amnion, chorion, allantois, and yolk sac.胚膜：任何与发育中的胚胎相关或包围胚胎的膜状结构，包括衣胞、绒膜胚囊、尿膜和卵黄囊美国传统〔serosa〕The chorion of a bird or reptile embryo.绒毛膜：鸟或爬行类胚胎的绒毛膜美国传统〔villus〕One of the fingerlike projections of the chorion that contribute to the formation of the placenta in mammals.羊膜绒毛：绒毛膜的分支突起，借以形成哺乳动物的胎盘美国传统 |
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