•There was heavy/a lot of traffic on the roads this morning.今晨道路上车流量很大。

•We got stuck in traffic for several hours.我们碰上交通阻塞，被堵了好几个小时。

•New measures have been introduced to try and ease traffic congestion in the city.这个城市已经采取了新措施，试图缓解交通挤塞。

•Five people were injured in a traffic accident (= one involving vehicles).有五人在交通事故中受伤。

•The airline halved its overseas service because of a sharp reduction in traffic.该航空公司因运输量骤降而削减了一半海外业务。

•Environmental groups want more passenger and freight traffic moved off the roads and onto trains.环保团体想要把更多的客运和货运业务从公路转移到铁路上。

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•to cut down the traffic in drugs /the drug traffic打击毒品买卖

•Police are looking for ways of curbing the traffic in guns.警方正在想方设法遏制非法枪支交易。

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•They were arrested for trafficking in the eggs of protected species of birds.他们因非法交易国家保护鸟类所产的蛋而被捕。