Smaller plastic pieces can also enter the food chain and end up in our bodies.
更小的塑料碎片也可以进入食物链，最终留在我们的身体里。
Food quality control laboratories could use this new tool to detect these drugs before they enter the food chain.
食品质量控制实验室可以利用这个新的工具在他们进入食物链之前来检测来检测这些药物。
But over a period of weeks, the radioactivity particles enter the food chain when they are ingested by animals or settle into dirt where they can be absorbed by the roots of growing plants.
但经过数周后，放射性颗粒可经动物消化后进入食物链，或经植物的根进入周围土壤。
After the soil is polluted by the heavy metallic element, these harmful elements will enter finally the human body through the food chain, which will do harm to the human health.
因为土壤被重金属元素污染后，这些有害元素将通过食物链最终进入人体，对人体健康造成危害。
After the soil is polluted by the heavy metallic element, these harmful elements will enter finally the human body through the food chain, which will do harm to the human health.
因为土壤被重金属元素污染后，这些有害元素将通过食物链最终进入人体，对人体健康造成危害。
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