As a matter of fact, it is a technical problem. 事實(shí)上,這是個(gè)技術(shù)問(wèn)題。
Controlling and reducing automobile pollution is a complexly technological and extensively social issue. 控制和減少汽車(chē)對環(huán)境的污染是一個(gè)復雜的技術(shù)問(wèn)題和廣泛的社會(huì )問(wèn)題。