例句：

　　The rain had freshened the air.

　　下雨使空氣變得清新了。

　　I think there's rain coming on.

　　我看要下雨了。

　　The rain came down in torrents.

　　大雨滂沱。

　　The rain now was pelting down.

　　雨這時(shí)正嘩嘩地下。