电子垃圾也会含有很多有毒金属物。
植物是有毒金属进入食物链的一种方式。
Plants offer a way for toxic metals to enter the food chain.
有毒重金属是主要污染物之一。
有毒重金属是重要的污染物之一。
有毒重金属的含量均低于国家标准。
The contents of toxic heavy metals were lower than national standards.
有毒重金属的含量均低于国家标准。
The contents of toxic heavy metals were lower than national standards.
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