Electroscopy
验电法; 气体电离检定法
🗣️ 情景例句
I'll join you in a minute.
我马上就来找你。
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
I'm sure you'll find that we are very competitive now.
我敢说你们一定会发现，我们现在的价钱是不怕别人竞争的。