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
His studies haven't been inproving lately.
他的学业最近没什么进步。
In his defense, he still tried to justify himself.
为了保护自己，他一直试图证明自己的行为是正当的。
So today, people still do the same thing to each other.
所以，今天人们还在互相做同样的事情。