She took the stairs at a run.

　　她跑著(zhù)上了樓梯。

　　Can you run as fast as Mike?

　　你能和邁克跑得一樣快嗎？

　　You can't run on a full stomach.

　　飽餐之后不能跑步。

　　They ran forward to welcome her.

　　他們跑向前去歡迎她。

　　I ran out onto the landing.

　　我跑出去上了樓梯平臺。

　　The dog ran up, wagging its tail.

　　那條狗搖著(zhù)尾巴跑上前去。