Blastulation
囊胚形成
🗣️ 情景例句
You think you've got what?
你想你已经拍齐了什么？
I'm scared to death.
我害怕得要死。
But we don't fight very often. We love each other and we are both very happy that we are twins.
但是我们并不经常争吵。我们互相爱护，我们都非常庆幸是孪生。