at a run例句

Meggie followed the dwindling forms of her brothers at a run.
麦琪奔跑着追赶哥哥们逐渐缩小的背影.

He covered the distance to his house on Downing street at a run.
他一口气跑到唐宁街他的家里.

He at a run but soon tired and slowed to a walk.
他跑步开赴,但很快就累得慢下来成了步行.