Blastulation
囊胚形成
🗣️ 情景例句
I can assure you that as long as you stay at home, you're safe.
我可向你保证，只要你呆在家里就会很安全。
I'll see what I have. What do you need it for?
我来看看我有什么样的零钱。你要干嘛？
Then he spoke slowly, but I could not understand him.
于是他说得慢了，可我还是听不懂。