Exercise, fresh air and sleep are essential for the preservation of health.
体育锻炼、新鲜空气和睡眠是保持健康所必需的。
Moderate exercise, fresh air, and enough sleep are essential for the preservation of good health.
适当的运动、新鲜的空气和充足的睡眠对于保持健康是非常必要的。
Moderate exercise, fresh air, and enough sleep are essential for the preservation of good health.
适当的运动、新鲜的空气和充足的睡眠对于保持健康是非常必要的。
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