Metcolizing
铸铁表面(喷)渗铝法
🗣️ 情景例句
I've been studying all day, and I'm sick and tired of it.
我学了一天，现在感到厌倦。
To play the guitar
弹吉他
Quick, turn the gas off. Cover the pan. Be careful!
快，把煤气关上。盖上锅。小心！