n.通勤者；每日往返上班者；乘火车或公共汽车往返于两地之间的人；定期车票乘客；地区航空，定期短途航线

The cops and firefighters knew they might take heat from the hundreds of thousands of subway, bus and commuter line riders, as well as motorists, who would be delayed in the evening rush. 几十万地下铁路、公共汽车以及通勤铁路的乘客，还有自己开车的人，在傍晚下班时交通将受耽搁，警察和救火队员知道那些人将会怪罪他们。

Another commuter from the suburban gentry. 来自郊区的又一个通勤者

The five o'clock train is always packed with commuters. 五点钟那趟车总是挤满了通勤者。