| 释义 |
DEFINITIVE EXAMPLES 权威例句〔NORMAL/ORDINARY〕The drug was found to cause genetic abnormalities in unborn children. 这种药物被发现可造成胎儿基因异变。朗文写作活用〔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〔implant〕The fertilized egg implants and becomes a foetus.受精卵着床后发育成胎儿。朗文当代 |