It's not just dropping food on the floor that can lead to bacterial contamination.
不仅仅是食物掉在地上会导致细菌污染。
As it travels through various points of the supply chain, there are possibilities of this food being exposed to temperatures or other factors that could lead to its contamination.
由于这些蔬菜水果会经过供应链的各个节点，暴露在常温下或者其它因素会导致污染。
Therefore, the study of condition that crops threatened by lead pollution is vitally significant for the prevention of food contamination and protection of human health.
因此，研究作物铅污染胁迫状况，对于防止食品污染，保障人体健康有着重要的科学意义。
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