本发明具有环保、不污染的菠萝清汁的优点。
The method has the advantage of environmental protection, and does not pollute the clear pineapple juice.
我们应该保护我们的水资源，不污染它们。
就在我说这些的时候，一些欧洲国家出于对经济的担心开始不遵守他们以前减少污染的承诺。
Even as I speak, economic worries have prompted some European countries to begin backpedaling on their commitments to cut back on global warming pollution.
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