Our land is polluted by the large amount of harmful waste from refineries which needs to be dumped.

我们的土地被需要掩埋的大量有毒废料所污染。

The sorted collection and secured disposal for harmful waste should be emphasized in the urban settlement of peri-urban area.

城市型住区应注重有害垃圾的分类收集与安全处置；

In addition to supplying essential nutrients, partial change of water can dilute and remove harmful waste product that accumulates in closed environments.

除供应根本营养素之外，水的部份变动可能稀释和去除在闭合的环境里积累的有害的废品。

Article 9 the ship waste shall be put in containers or garbage bags, the poisonous and harmful waste or other dangerous articles shall be placed separately.

第九条船舶垃圾应存放在容器或垃圾袋内，其中含有毒有害或其它危险物品的，应单独存放。

Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.

工业废料更有害，因为其中有许多毒性很强的材料，如铜和铅。