Blastulation
囊胚形成
🗣️ 情景例句
As soon as I get these cuff links on.
只等我将袖扣扣好。
I ate eggs for breakfast yesterday.
我昨天早饭吃的是鸡蛋。
Tie a heavy weight at the end of a long piece of string.
把一个重物拴在一根长绳子的一端，