Micrometre
n. 微米,百万分之一米(长度单位,符号为μm)
🗣️ 情景例句
What's wrong?
怎么了？
You've changed little.
你一点也没变。
The hovercraft travelled first over the water, then mounted the beach,
气垫船先是在水面上行驶，后又登上海岸，