According to the rule, used batteries must be dropped in the red bin for harmfulwastes.
根据规定，用过的电池必须扔在红色的有害废物垃圾箱里。
2
The pollution of water is equally harmful. The whole ecological balance of the sea is being changed and industrial wastes have already made many rivers lifeless.
水污染同样有害，海洋的整个生态平衡正在受到破坏，工业废水已使许多河流的生物死亡。
3
Such value orientation is quite harmful, which restricts the progress of our thoughts and wastes the resources of the library undertakings.