商品从远方运过来，自然需要用飞机、火车、卡车、轮船等来运输，而这些运输就涉及到污染。
When something has to come from far away, obviously there is transportation, be this plane, train, truck, or ship, transportation involves pollution.
商品从远方运过来，自然需要用飞机、火车、卡车、轮船等来运输，而这些运输就涉及到污染。
When something has to come from far away, obviously there is transportation, be this plane, train, truck, or ship, transportation involves pollution.
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