Amniongenesis
羊膜形成
🗣️ 情景例句
Uh-uh.
嗯。
No, I only wrote her one letter this year.
是的，今年我才给她写过一封信。
Soon afterwards, the balloon began to descend and it landed near an airfield.
不久，气球开始降落，在一个停机坪附近着了陆。