Mechanical damage
[化] 机械损伤; 硬伤
🧩 词语组成解析
🗣️ 情景例句
While sitting on the bus I often meet interesting people.
乘车时，我经常碰到一些有趣的人。
Morning, Alice.
早上好，爱丽斯！
The eraser goes from one student to another first one way, then another.
橡皮擦从一个学生传给另一个学生－先从这个方向传过去，然后返回来。