Malcomising
不锈钢表面氮化; 氮化热处理
🗣️ 情景例句
Let sleeping dogs lie.
别招惹麻烦。
I haven't heard from him for a long time.
我很久没有收到他的信了。
Is that why you don't want to go home?
这就是你不想回家的原因吗？