Winter weather means taking special precautions when you exercise outside.
冬天寒冷的天气需要我们在进行室外锻炼的时候格外注意。
It is certain that you can master some special skill by doing exercise.
你肯定可以在运动中掌握一些特殊技能。
Control: special topics: Hyperpnea of exercise, special features of high altitude control.
调控机制：特别话题：运动中的吸氧过度，高海拔下的特殊表现。
Control: special topics: Hyperpnea of exercise, special features of high altitude control.
调控机制：特别话题：运动中的吸氧过度，高海拔下的特殊表现。
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