Nitridation
[化] 渗氮\\n[医] 氮化[作用]
🗣️ 情景例句
There's no need to rush.
没有必要急急忙忙。
She sent me a Christmas card last year.
去年寄过一张圣诞卡。
America, Russia and Europe are filled with enthusiasts----
美国、俄罗斯和欧洲都有许多热心此项事业的人