Knauffite
钡钒铜矿
🗣️ 情景例句
If you aren't busy today, how about lunch?
如果你今天有空的话，吃一顿午饭如何？
Sorry. Was I disturbing you?
对不起，我刚才打扰你了吗？
She entered the station twenty minutes before the train was due,
在火车进站20分钟前她就进了车站。