Rcd
abbr. 剩余电流装置（residual current device）；路由控制数字（Route Control Digit）；接收机载波检测器（Receiver Carrier Detector）
🗣️ 情景例句
Why can't you do both?
为什么不能两样一起做？
In all things, it is better to hope than to despair.
凡事抱希望为佳，不应悲观而失望。
They stopped talking when their boss came in.
当老板进来的时候；他们停止了交谈。