According to the U.S. Forest Service, trees offset annual carbon dioxide emissions from fossil fuels by about 15 percent.

根据美国林务局的数据，树木每年抵消化石燃料产生的二氧化碳排放量约15%。

There were broad stretching elms, cherry and apple trees, service trees, and there were lime trees intended to form an avenue, which lost itself in a wood in the friendly neighbourhood of pines and birches.

那里有宽阔的榆树、樱桃树和苹果树、服务树，还有打算形成一条大道的椴树，这条大道隐藏在松树和桦树友好社区的树林中。