论文部分内容阅读
美国自1970年开始采取行动,以减少交通运输领域产生的空气污染,这意味着我们有不少经验教训可供分享,我相信中国可以从中获益,并在较短时间内取得类似效果。
The United States has been taking action since 1970 to reduce air pollution in the transport sector. This means that we have a lot of lessons to share. I believe China can benefit from it and achieve similar results in a relatively short period of time.