Multinitriding
多次氮化
🗣️ 情景例句
Very interesting pictures, Mr. Stewart.
你的照片很有意思 Stewart先生。
Proverbs are the cream of a nation's thought.
谚语是一国的思想精华。
He is very happy to see his wife.
丈夫见到他妻子，很高兴。