R

Rain before seven, fine before eleven. 早晨下雨午前晴。 (来源：英语聊天室 http://chat.EnglishCN.com)

Rain cats and dogs 大雨倾盆

rank and file 普通一兵，普通老百姓

read between the lines 体会言外之意

Reading makes a full man, conference a ready man, and writing an exact man. 阅读使人渊博，会谈使人机敏，写作使人严谨。

Read one's mind 直到他人的心思

Reap as one has sown. 种豆得豆，种瓜得瓜

red tape 繁文缛节

Respect a man, he will do the more. 敬人一分，受敬十分。

Rest on one's laurels 躺在荣誉上睡觉

restless like Ulysses 劳顿不休

return kindness with ingratitude 恩将仇报

Rich man feed, poor man breed. 富人足食，穷人多子。

Riches serve a wise man but command a fool. 财富为聪明人服务，但能支配傻瓜。

Ride the high horse 趾高气扬

rind a bell 唤醒过去

rise from the ashes 从毁灭中再生

rob Peter to pay Paul 拆东墙补西墙；借钱还债

a Roland for an Oliver 势均力敌；针锋相对

roll out the red carpet 热烈欢迎

A rolling stone gathers no moss. 转石不生苔。

Rome was not built in one day. 罗马并非一天建成。

Round the clock 不分昼夜

round-table conference 圆桌会议

royal road 坦途

rub it in 反复讲别人不愿听的事

rub shoulders with 点头之交

rub up the wrong way 倒着毛摸

run one's head against a stone wall 碰壁

Rust consumes iron, and envy consumes itself. 铁锈腐蚀钢铁，妒忌伤害自身。