Magbasite
硅镁钡石
🗣️ 情景例句
Tom is studying photography at NYU. Tom
正在NYU学摄影。
She is starting to work her way up in the company.
她在公司开始发挥实力了。
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，