Documenter
[计] 资料员
🗣️ 情景例句
The book is worth reading.
这本书值得一读。
I'm gonging to show him how to play bridge.
我正要指点他如何打桥牌。
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，