second pollution是什么意思 second pollution怎么读
second pollution的用法和样例
- We should control the secondary pollution.
我们应该控制二次污染。 - No wastewater release in manufacture procedure, remaining and soil assimilate after degradation, no second pollution formed.
产品在生产过程中，无污水排出，降解后，残余物质与土壤同化，不会形成二次污染。
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