There are many kinds of pollution, like sound pollution, air pollution and water pollution.
污染有许多种，比如噪声污染，空气污染和水污染。
That may sound like a good thing because it reduces methane emissions and leachate. But it also spreads out the risk of pollution over a very long period.
垃圾不降解这可以降低沼气的产生听起来这似乎是个好事情，但却大幅延长了污染风险存在的时间。
That may sound like a good thing because it reduces methane emissions and leachate. But it also spreads out the risk of pollution over a very long period.
垃圾不降解这可以降低沼气的产生听起来这似乎是个好事情，但却大幅延长了污染风险存在的时间。
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