Lactone
n. [化] 内酯
🗣️ 情景例句
It's small,
它小小的，
I know the boy whose father is an engineer.
我知道那个男孩的父亲是工程师。
Oh, I'm feeling even worse! I think I'm going to die!
噢，我感觉更糟了！我想我要死了！