这个城市的交通非常拥堵。
zhègè chéngshì de jiāotōng fēicháng yōng dǔ 。
The traffic in this city is very congested.
我每天都要考虑交通问题。
wǒ měitiān dūyào kǎolǜ jiāotōng wèntí 。
I have to consider traffic issues every day.
交通信号灯帮助车辆交替通行。
jiāotōng xìnhào dēng bāngzhù chēliàng jiāotì tōngxíng 。
Traffic signals help vehicles alternate in passing.