Nitempering
气体软氮化; 氮回火
🗣️ 情景例句
I was. I came back here last month on vacation.
本来是，不过上个月回来度假。
The man thinks he has it made.
这个人想要自己制作它。
Aeroplanes have the reputation of being dangerous and even hardened travellers are intimidated by them.
飞机以危险而著称，连老资格的旅行者也怕飞机。