Nuclear pollution is one of the ten environmental problems in the world and a terrible shadow which human beings can not get rid of.
核污染已成为全球十大环境难题之一，成了人类摆脱不掉的阴影。
Nuclear pollution is one of the ten environmental problems in the world and a terrible shadow which human beings can not get rid of.
核污染已成为全球十大环境难题之一，成了人类摆脱不掉的阴影。
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