Gastrular
a. gastrula的變形
??? 情景例句
I feel sick as a dog.
我病得很厲害。
While there is life, there is hope.
留著青山在，不怕沒柴燒。
The city dweller never experiences anxieties of this sort.
這種焦慮，城里人是從未體驗(yàn)過的。