Intergrind
相互研磨
🗣️ 情景例句
I visited Japan on an observation tour of its industries.
我到日本观摩它的工业。
What do you think about it?
你对此怎么看？
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，