runner back

The Manchester United defender had been the front-runner until Sir Alex Ferguson's side were badly exposed at the back in several games over the past two months.

曼联后卫原先是弗格森爵士的球队中发挥最好的球员，但由于过去2个月的表现现在却成了众矢之的。

Flow fields in front and back of the model turbine runner for the Three Gorges power station

三峡模型水轮机转轮前后的流动特性

Omar headed the ball to his brother. "I hear he's a great kite runner." His brother headed the ball back to him. Omar caught it, tossed it up and down.

奥马尔用头将足球顶给他弟弟，“我听说他追风筝可厉害了。”他弟弟将足球顶回来，奥马尔伸手抓住，拍上拍下。

Paul: I just pulled a muscle in my back and aggravated my runner's knee, that's all.

保罗：我只是拉伤了后背的肌肉，膝盖的伤有点恶化，仅此而已。