Nitrocarburizing
氣體碳氮共滲; 滲碳氮化
??? 情景例句
Mary, we're going to miss you.
瑪麗，我們會很想你的。
Congratulations on your having passed the test.
我恭喜你通過了考試。
'Hi, Elizabeth,' Nigel answered.
“你好，伊麗莎白，”奈杰爾回答說，