However, the harmful gas and leachate produced in the course of refuse composting will affect the regional environmental quality.

尽管如此在垃圾堆肥过程中还将释放出有害气体和垃圾渗透液等影响环境质量。

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Municipal refuse in our country is mostly disposed by means of stacking in the open, filling of natural pits, sanitation burying, composting, burning and classifying.

我国城市垃圾目前大多采用露天堆放和自然填坑、卫生填埋、堆肥、焚烧、源头分类收集等方法。

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In landfills many plastic films are covered above the refuse. Even though it is covered, will the composting of solid waste still have a serious effect on the soil after a long period of time?

在垃圾填埋场，虽然垃圾堆上覆盖着塑料膜，但时间一长，这会不会对堆肥下面的土壤造成不良影响吗？

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