More needs to be created to enable sustained exercise.
需要进行更多的创造，使持续的运动。
Cardiorespiratory fitness, or aerobic fitness, is the ability of the circulatory and respiratory systems to deliver oxygen to skeletal muscles during sustained physical activity or exercise.
心肺适能，或有氧适能，是指持续体力活动或锻炼时机体循环系统和呼吸系统向骨骼肌供氧的能力。
Although obesity seems like it should be easily treated with diet and exercise, long-term studies of dietary treatment have failed to show a sustained weight loss for the vast majority of patients.
虽然看起来肥胖应该很容易通过节食和运动治疗，但是对节食疗法的长期研究表明，对大部分肥胖者来说，它没有显示出持续的降低体重的效果。
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