Pregastrulation
原肠形成前期
🗣️ 情景例句
I hope you will excuse me.
希望你能原谅我。
We intend to place large regular orders, and would therefore like to know what quantity discounts you allow.
我方将定期大量订购，因此想知道你方给多少数量折扣。
Live animals? I didn' t know we were going to take live animals with us, Sir.
活的动物？我还不知道我们要带活的动物，先生。