交通警的用法和样例：
例句
-
如果你的车子停错了地方，交通警察马上会发现。
If you park your car in the wrong place, a traffic policeman will soon find it. -
这条路非常窄，所以交通警察不得不给司机规定出驾驶速度。
The road is very narrow, so the traffic police have to set the pace for the drivers. -
交通警察挥旗命令那辆经过的汽车停下来。
The traffic police flagged the passing car down.
