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Miners and chemical workers are at risk of COPD from breathing dust and harmful chemicals.

矿工和化学工人由于吸入粉尘和有害化学物质处于慢阻肺病风险中.

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Miriam: What! Of course not. Used engine oil is full of harmful chemicals.

蜜莉恩: 什麽? 那当然不可以, 用过的引擎润滑油充满了有害化学物质耶.

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This saves you money and time and keeps harmful chemicals out of theenvironment.

植物栅栏不只是比传统的栅栏省钱,它也从不需要油漆.

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