Let's do some warming-up exercises first.
首先让我们做一下热身运动。
The runners have been in their lanes. They are doing warming-up exercises.
赛跑选手们已经站到了各自的跑到上，在做着暖身运动。
The sprinters are in their lanes now. They are doing up some warming-up exercises.
运动员已经上跑道了，他们要做准备活动。
After warming-up exercises, the teacher told us the way of long jump and showed us how to do it.
经过热身运动之后，老师告诉我们跳远的方法，也向我们展示了如何做跳远运动。
These injuries are due to insufficient warming-up exercises, poor sporting proficiency, uneven field, reoccurrence of old injury and exhaustion.
造成运动损伤的主要原因是准备活动不充分、技术水平不高、场地欠佳、旧伤复发、运动疲劳等。
Warming-up exercises will increase your body temperature, decrease your muscle viscosity, relax your muscles and make your muscles meet required conditions.
准备活动可以升高体温，降低肌肉的粘滞度，放松肌肉，使肌肉达到运动所需的状态。
After warming-up exercises, the teacher told us the way of long jump and showed us how to do it. Then we followed the teacher and practised one after another.
准备活动完后，老师告诉我们跳远的方法并做了示范，然后我们就跟着老师一个一个地练习。
What you should pay attention to are the warming-up & relaxion of activities & exercises.
要注意的是长跑前的准备运动和锻炼后的整理放松运动；
What you should pay attention to are the warming-up & relaxion of activities & exercises.
要注意的是长跑前的准备运动和锻炼后的整理放松运动；
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