Nitrograph
氮气浓度含量测定器
🏥 医学释义
氮气浓度测定仪
🗣️ 情景例句
Many foreign friends used chopsticks when they visited China.
许多的外国朋友在访问中国的时候都使用筷子。
I'm sorry. I can't make it on Tuesday.
对不起，星期二我无法参加。
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。