throw rubbishes.乱扔垃圾你们已经养成了随地乱扔垃圾的习惯。You have developed the habit of littering. 我们不应该到处乱扔垃圾和随地吐痰在公共场所。We shouldn't leave rubbish everywhere and spit in public places. 一提到乱扔垃圾,我就想起了一个故事。A reference to litter, I think of a story. 我会节约水和不乱扔垃圾。I will save the water and never throw rubbishes.