Stationary cars in traffic jams cause a great deal of pollution.

交通堵塞中停止不前的车辆造成大量污染。

《柯林斯英汉双解大词典》

There has been a decrease in traffic accidents.

交通事故减少了。

《新英汉大辞典》

We were stuck in traffic for over an hour.

我们遇上堵车，堵了一个多小时。

《牛津词典》

Many people die in traffic accidents on roads that are covered with snow or ice.

VOA: special.2010.01.05

Biking in traffic is never safe, but you can make it a little bit safer.

上街骑单车不会绝对安全，但你可以采取点措施让它相对安全点。

喜欢自行车 - SpeakingMax英语口语达人

And you know we have a very dominant traffic share over there, so it's really a very good spot to be in.

在中国，百度占据着,绝大部分的流量份额，这是一个很吸引人的地方。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Where else could riding a puttering scooter in traffic-clogged streets look so incredibly stylish?

BBC: Living in: Florence

Those behind the wheel during rush hour aren't the only ones stuck in traffic.

ENGADGET: blogger-avatar

Having researched the law, he spent six hours in traffic court and won his case.

WSJ: On the George Washington Bridge, Picking Up Hitchhikers Takes a Toll