The car came to a sudd halt in the middle of the road.

汽车在马路当中了下来。

The cart stopped suddenly, tipping its load off in the middle of the road.

马车下来, 车上的到路中间。

The fence along the middle of the road is intended to guard vehicles from crashing into each other.

道路中央的防护栏是为防止汽车相撞而设的。