Naumannite
硒银矿
🗣️ 情景例句
I used to stop for hitch-hikers'till the day I picked up that maniac.
自从有一天搭了一个精神病人以后，我碰到搭顺风车的人就不再停下来了。
I'd like to change this ticket to the first class.
我想把这张票换成头等车。
Take a seat please, make yourself at home.
请坐，随便一点。