我们去观看了一场改装赛车比赛，那些经过改装的标准量产车在赛道上达到了惊人的速度。

We went to watch a race where modified ___stock-cars reached incredible speeds on the track.

农场主用这辆旧货车把牛运到集市上。

The farmer used this old ___stock-car to transport the cows to the market.