Masuyite
水铅铀矿
🗣️ 情景例句
Can you stop by for one minute?
你能否过来坐坐？
Whom will you work for?
你将为谁工作？
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，