Haeckel's gastrea theory
[医] 黑克耳氏原肠祖学说
🧩 词语组成解析
n. 原肠动物
🗣️ 情景例句
It's a great college.
那是一所好大学。
Hello. May I speak to Mr. Green?
你好，我找格林先生。
so we went to have a look at him.
于是就走过去看看。