Bemaglite
铍镁晶石
🗣️ 情景例句
They're open until nine o'clock.
他们开到九点。
A smart coat is a good letter of introduction.
人要衣装，佛要金装。
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，