Pentahydrite
[矿]五水泻盐
🗣️ 情景例句
A foreign diplomat grabbed his chopsticks as a historic souvenir.
一名国外的外交人员就拿起他用过的筷子，用它作为具有历史意义的纪念品。
Come to see me tomorrow if it is convenient to you.
你如果方便的话，明天来看我。
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，