Optronics
光电子学, 光导发光学
🗣️ 情景例句
You are not going to be able to move after this and the aerobics class.
你会动都动不了的。在你做完这个后又去上有氧运动课之后。
Nothing for nothing and very little for a half penny.
一分钱，一分货。
We are wasting time.
我们是在浪费时间。