Some are very common. For example, I'm sure that most of you have heard the expression " raining cats and dogs" . We use it when it is raining very, very hard. In other words, when it is pouring!
有一些很常见。例如,
相信大多数人都听说过" 倾盆大雨" 。当雨下的非常大的时候,
们使用它。换句话说,当下瓢泼大雨的时候!