超过10万人可能会在饮用受到污染的水后患病。More than 100,000 people could fall ill after drinking contaminated water.在黄石公园里使用雪车这一想法,为人们提供了一种对环境低影响、低污染的游览方式。The snowcoach concept in Yellowstone provides low-impact, low-pollution access.从汉福德受污...
Today we are overpopulated, straining the earth's resources.现在我们人口过多,致使地球资源使用过度。Environmentalists say Australia is already overpopulated.环保人士认为澳大利亚已经人口过剩。Pollution is the price we pay for an overpopulated, over indu...