Clausthalite
[化] 硒铅矿
🗣️ 情景例句
Hobbies are supposed to be relaxing.
业余爱好应该是令人放松的。
Was I supposed to help you today?
今天我想帮你忙。
Tired of sleeping on the floor, a young man in Teheran saved up for years to buy a real bed.
德黑兰的一个人年轻人由于对睡地板感到厌倦，于是积蓄多年买了一张真正的床。