广播电视英语短句 第 296 课：种植树木-2

And they act as a windbreak, so they reduce heating costs in winter. 另外他们能够作为防风林，那样就可以在冬季减少供暖的费用。

Trees can also improve water quality around farms by removing pollutants from soil and groundwater. 它们还能通过移除土壤和地下水中的污染物来提升农场周围的水源质量。

Several years ago, people were objecting to the odor of poultry farms on the Delmarva Peninsula in the eastern United States. 几年之前，人们纷纷抗议位于美国东部Delmarva 半岛家禽养殖场的气味。

Delmarva is where the states of Delaware, Maryland and Virginia come together. Delmarva是特拉华，马里兰和维吉尼亚三州汇集处。

Two thousand farms there can each house an average of seventy-five thousand chickens. 哪里的两千个农场平均每个农场都能养殖七万五千只鸡。