Electroscopy
验电法; 气体电离检定法
🗣️ 情景例句
It's a serious matter for a lot of us.
对我们许多人来说这可是个严重的问题。
I'm thirsty. It's too hot and dry.
我口渴了。天气太热太干燥了。
Tim is looking at an aeroplane.
蒂姆正望着一架飞机。