Placentogenesis
[医] 胎盘发生
🗣️ 情景例句
It's not finished yet.
现在还没有完成。
The surest way to be happy is to be busy.
要快乐，最可靠的办法是忙碌。
for fear the agents of other firms should be able to trace the kind of research they are likely to be undertaking.
他们生怕别的公司的情报人员据此摸到他们可能要从事的某项科研项目。