Microspindle
千分尺轴; 千分螺桿
🗣️ 情景例句
I'd never been away from home,
我从来没有离开过家，
What time does the first train to Boston leave?
第一班去波士顿的列车什么时间开出呢？
Do you speak Chinese?
你会讲汉语吗？