您要查找的是不是：
- He ran at varying speed. 他以不同的速度奔跑着。
- He ran at top speed, but didn't get a good result. 他可着劲儿猛跑，可还是没有跑出好成绩。
- He ran at an average speed at the beginning of the race. 在比赛开始时他以中速赛跑。
- He ran at me and grasped my hair and my shoulder.But I was desperate now. 他朝我扑过来，抓住我的头发和肩膀。那时我什么也不顾了，
- Henry Bracebridge, of Cleveland, into whom he ran at the Union Club one evening after he had been in the city a month. 他到芝加哥来已经一个月，雷斯脱有一天晚上跟他在友联俱乐部碰头。
- He ran into an old flame of his at the supermarket. 他在超级市场碰见了他的一个老相好。
- He ran away from home at the age of thirteen. 他十三岁那年就离家出走了。
- He ran to dorm at a fantastic speed. 他很快的跑回宿舍。
- He ran at me with a knife. 他持刀向我冲来。
- He ran at a tremendous speed. 他以惊人的速度跑着。
- That man ran at John like a wild thing. 那人像只野兽一般向约翰扑过来。
- He ran quickly so as to catch the last bus. 他跑得很快以便赶上那末班车。
- He said he would help us, but at the last moment he ran out on us. 他说他要帮我们的忙，但最后却丢开我们不管了。
- He ran away from you when you needed his help most. 当你最需要他的帮助时，他跑开了。
- He is running at the top of his speed. 他正以最快的速度奔跑。
- He ran off an article for the local newspaper. 他为当地报纸匆匆写了篇文章。
- Don't let the children run at rovers. 不要让孩子们随意乱跑。
- He ran back the tape after hearing it. 他听完录音后把磁带倒回去。
- He ran fast enough to catch the thief. 他跑得飞快，足以抓住那小偷。
- The car ran at a speed of 50 kilometers an hour. 那辆车以每小时50公里的速度行驶。
