我正沿着那条街走着走着，突然一辆车在我面前撞了。
I was proceeding along the street when a car crashed in front of me.
有一天，正沿街走着，难题的解突然出现在我面前。
One day, going along the street, the solution of the difficulty which had stopped me suddenly appeared to me.
我正沿着河边的路走着，突然我看见一位小姑娘掉进冰里。
I was walking along the road next to the river when I saw a little girl fall through the ice.
应用推荐