Tribometry
摩擦力测量术
🗣️ 情景例句
Now I remember.
现在我想起来了。
Personally,I prefer winter weather.
个人而言,我比较喜欢冬季天气。
It is being repaired by a friend of my father's.
父亲的一个朋友正在修理这件乐器。