Nitempering
气体软氮化; 氮回火
🗣️ 情景例句
Yes, I have, Dad.
是的， 我考虑了， 爸爸。
By the hands of many a great work made light.
众擎易举。
Football is a very popular game in China. Many young people like it.
足球在中国是一项很受欢迎的运动。许多年轻人喜欢足球。