The earthworm had a very strong ability to concentrate the heavy metal element, and the ability increased along with the increase of soil metal pollution.
蚯蚓对重金属元素具有很强的富集能力,且随土壤污染程度增加而增加。
The environmental pollution caused by cadmium, a heavy metal toxic element, has aroused geologists' attention.
镉是重金属有毒元素,其环境污染一直是众多学者研究的焦点。
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