6PHRASE [VERB inflects]突然生气;勃然大怒 If you lose your rag, you suddenly become so angry that you are not in control of yourself. 突然生气;勃然大怒 [British, informal]
I've only once seen him lose his rag.
我只见他发过一次脾气。
7PHRASE 从赤贫到巨富;白手起家 You use rags to riches to describe the way in which someone quickly becomes very rich after they have been quite poor. 从赤贫到巨富;白手起家
His was a rags-to-riches story and people admire that.
他白手起家,人们对他都很钦佩。
8PHRASE 激怒人的东西 If you describe something as a red rag to a bull, you mean that it is certain to make a particular person or group very angry. 激怒人的东西 [mainly British]
This sort of information is like a red rag to a bull for the tobacco companies.