求翻译：加之重金属具有毒性大、在环境中不易被代谢、易被生物富集并有生物放大效应等特点，不但污染水环境，也严重威胁人类和水生生物的生存。是什么意思？

Combined with toxic heavy metals in the environment can not be easily metabolized easily bioconcentration and biomagnification effect, not only pollute the water environment, and also a serious threat to the survival of the human and aquatic life.

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Adds the heavy metal to have the toxicity big, in the environment by metabolism, easily is concentrated not easily by the biology and has characteristics and so on biology scale-up effect, not only pollution water environment, also threatens human and the aquatic biological survival seriously.

Coupled with heavy metal toxicity, metabolism, easy to be easily in the environment effects of bioaccumulation and biomagnification and other characteristics, not only pollution of the water environment, also seriously threaten the survival of humans and aquatic organisms.

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