Microstone
细粘度油石
🗣️ 情景例句
I'm not getting on very fast with this job.
我这份工作进展不快。
How was it, sir?
它好吗？先生。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。