Bipotential
双电位
🗣️ 情景例句
I'm really concerned about going away for the weekend, Ellen,
我这个周末出门实在放心不下， Ellen，
As soon as I get to Guangzhou, I'll drop you a line.
我一到达广州，就给你写信。
'I might as well have them,' I said sadly.
“我还是买下的好，”我垂头丧气地说。