To keep fit, we must take proper exercise.
为了保持健康，我们必须进行适当的体育锻炼。
It is important to maintain a proper balance to stay active and fit.
保持适当的平衡，积极健康地生活非常重要。
As with any body armor, proper fit is EXTREMELY important.
正如任何防弹衣，适当的配合是十分重要的。
How do I put on the respirator and check for proper fit?
如何佩戴防护口罩并检验适合性？
Besides, proper diets are also a rewarded way to keep you fit and healthy.
另外，完善的饮食也是保持健康的一个好方法。
Besides, proper diets are also a rewarded way to keep you fit and healthy.
另外，完善的饮食也是保持健康的一个好方法。
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