Electroradiometer
[医] 放射测量计
🗣️ 情景例句
We started by making safety equipment for many sports.
我们是以做运动产品的安全器材起家的。
What were you doing this time last year?
去年这时候你在干什么？
It's a waste of time reading that book. It's rubbish.
看那本书真是浪费时间。那简直是垃圾。