Nitriding
v. 渗氮
🗣️ 情景例句
Yes. I know I must seem silly.
是的，我知道我看来一定很可笑。
Could you tell me where is the first-aid room?
你能不能告诉我急诊室在哪里？
My grammar is improving, but I find idioms and useful expressions hard to learn.
我的语法在进步，但我发现习语和有用表达很难学。