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
How come you look so tired?
你怎么看起来这么疲倦？
There's as good fish in the sea as ever came out of it.
海里的好鱼是取之不尽的。
Civilized men like such a way of living.
文明人喜欢这样一种生活方式。