Clausthalite
[化] 硒铅矿
🗣️ 情景例句
I took him to Philip's office yesterday for a checkup.
我昨天带他到Philip的办公室去做检查。
A smart coat is a good letter of introduction.
人要衣装，佛要金装。
At the front of the classrooom.
在教室前排。