Blastula
n. 囊胚
🗣️ 情景例句
I like to study in the library because it's so quiet.
我喜欢在图书馆学习因为那儿很安静。
When the lights went out, I was washing my hair.
当熄灯的时候，我在洗头。
There is a new type of machine which can produce colour copies.
有一种新型的机器能够制作出彩色复印件。