Rr
abbr. 无线电航向信标（Radio Range-beacon）；雷达测距（Radar Ranging）；无线电接受器（Radio Receptor）；连流继电器（Reverse Relay）；阻力比（Resistance Ratio）
🗣️ 情景例句
We'll go together.
我们一起去。
I really don't know.
我真的不知道。
'I've been coming up here night after night for weeks now.
“好几个星期了，我天天夜里到钟楼上来。