美国一些地方已经开始反对这种全国趋势。
在美国一些地方，人们把这种天然气通过管道输送到较远的城镇，以供工厂及家庭使用，就同煤气一样。
In parts of America such gas is sent through pipes to distant towns, and used, like coal gas, in houses and factories.
垃圾按量收费制度在美国一些地方已经开始实施，被以为是一个既能处理垃圾又鼓励循环再利用的有效方法。
Pay-as-you-throw schemes are already operational in many parts of the United States, where they are largely considered a cost-effective way to manage waste and encourage recycling.
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