Placentogenesis
[医] 胎盘发生
🗣️ 情景例句
OK, let's get started.
好吧 ，我们开始工作。
I've made a reservation at the hotel you used last time.
我已预订了你上次住过的旅馆。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。