Polychromator
多色仪
🗣️ 情景例句
I hope you have a wonderful time
希望你们玩得开心
Want it badly.
求之不得。
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，