If you're going to be racing or running long in hot weather your pre-run hydration is critical to your performance comfort and safety.
无论你是要在炎热的室外快速短跑或者长跑，比赛前的充足的喝水量将对你跑步时的表现，舒适度和安全度起到很大的作用。
If you're going to be racing or running long in hot weather, your pre-run hydration is critical to your performance, comfort, and safety.
无论你是要在炎热的室外快速短跑或者长跑，比赛前的充足的喝水量将对你跑步时的表现，舒适度和安全度起到很大的作用。
The performance of train longitudinal dynamics has important effect on quality and safety of train running.
列车纵向动力学性能是影响列车运行质量和运行安全的重要因素。
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