Nefa
[化] 非酯化脂肪酸; 游离脂肪酸
🗣️ 情景例句
If you really mean it,
假如你是说真的，
You must be hungry. Shall we get something to eat?
你一定饿了，我们吃点东西好吗？
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。