Hamma
abbr. hammer 锤
🗣️ 情景例句
What's troubling you?
你有什么麻烦？
I heard you.
我听到了啦。
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，