Multinitriding
多次氮化
🗣️ 情景例句
Well, I guess your mother and I can manage it.
嗯， 我想你妈和我可以设法帮这个忙。
What about your opinion?
你怎么想？
The plane was then able to rise and it cleared the mountains by 400 feet.
于是飞机可以上升了，它在离山头400英尺的高度飞越了过去。