不要因为不能抬起身体就觉得失败了，而且观察能够保持多长时间用最大的努力去将手推向地板，肚脐贴近脊柱。
Instead of feeling defeated by your inability to lift up, try to see how long you can maintain the maximum effort of pressing your hands into the floor and drawing your navel back.
如果由数据过期来管理刷新，就像Web页面情况一样，那么可以使用策略或策略集合内部的关键字，来通知任意的缓存，告诉他们数据可以保持多长时间的方式来实现。
If refresh is managed by data expiration, as is the case for Web pages, it can be implemented using keywords inside policies or policy sets to inform any caches how long they can retain the data.
什么时候每一个项目必须遵循企业模型，以及项目与企业保持差异性可以维持多长时间，这也是一个政策决定。
It is also a policy decision as to when each project must conform to the enterprise models and for how long a project may remain at variance to the enterprise.
由于生物体本身的习性就是在晚上睡觉，很多曾经上过夜班的人称：不论他们曾经作过多长时间的夜间工作，现在他们总是很难保持清醒。
With biology beckoning their bodies to sleep during the night, shift workers say they struggle to stay awake no matter how many years they've done it.
如果没有规定时间和数量，无论多长时间，GP-12在整个生产加速期间或至少两周内保持有效。
If time or quantity is not specified, GP-12 will remain in effect through acceleration or a minimum of 2 weeks, whichever is longer.
如果没有规定时间和数量，无论多长时间，GP-12在整个生产加速期间或至少两周内保持有效。
If time or quantity is not specified, GP-12 will remain in effect through acceleration or a minimum of 2 weeks, whichever is longer.
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