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
how could a guy not be hungry with all this talk about eating?
当大家都在谈吃的， 谁能不饿呢？
He can't dress himself yet because he's too young.
他还不能给他自己穿衣服因为他是太年轻的。
It's Zheng Jie here. I've just got your message.
我是郑杰，我刚刚收到你的留言。