众所周知,树木可起到保护环境、净化空气的作用。美国科学家就此进行的研究显示,树木在吸收细小粉尘方面所起的作用超出了人们原先的估计。美国研究人员发现,在刮风时,细小粉尘会满天飞舞,这时树木不仅能阻挡粉尘流动速度,而且还能降低粉尘浓度,起到减少污染的作用。在风和日丽的日子,树木能“逮住”粉尘,不让其“侵犯”住家和学校, As we all know, trees can protect the environment and purify the air. Research conducted by US scientists on this shows that the role of trees in absorbing fine dust is beyond the people’s original estimate. American researchers found that when the wind blows, small dust can fly all day. At this time, the trees can not only stop the flow of dust, but also reduce the concentration of dust and play a role in reducing pollution. On a sunny day, the trees can “catch” dust and prevent them from invading homes and schools.