在克拉科夫，很多污染物来自家庭或工厂的煤燃烧，而在纽约市，小汽车，卡车和巴士的尾气排放是主要来源。
In Krakow, most of the compounds come from coal burning for home heating and factories, while in New York City, exhaust from cars, trucks and buses is the major source.
但是只要该产品有一定的商业价值，新闻单位可以阻止他人使用自家的新闻出版物。
But a news agency can retain exclusive use of itsproduct so long as it has a commercial value.
有人拍下了他吃力地拖着购物袋的照片，也有人听过他抱怨清理自家小狗排泄物的麻烦。
He has been photographed lugging shopping bags around and been heard complaining about picking up his own dog's droppings.
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