She took the stairs at a run.

　　她跑着上了楼梯。

上海419论坛　　Can you run as fast as Mike?

上海419论坛　　你能和迈克跑得一样快吗？

　　You can't run on a full stomach.

上海419论坛　　饱餐之后不能跑步。

　　They ran forward to welcome her.

　　他们跑向前去欢迎她。

上海419论坛　　I ran out onto the landing.

上海419论坛　　我跑出去上了楼梯平台。

上海419论坛　　The dog ran up, wagging its tail.

上海419论坛　　那条狗摇着尾巴跑上前去。