五六个小时。
Think you do just fine on five or six hours of shut-eye?
想想在闭上眼睛的五六个小时里你睡得好吗？
The journey was very difficult, and usually took five or six hours.
这个旅程是非常困难的，通常需要五六个小时。
Jeff: Not really. Sometimes I type for five or six hours without stopping.
杰夫：没有。有时候我打字连打五六个小时不停。
With just five or six hours' sleep, they're more energized than regular sleepers.
只要有5到6个小时的睡眠，他们能比正常睡眠者更加精力充沛。
With just five or six hours' sleep, they're more energized than regular sleepers.
只要有5到6个小时的睡眠，他们能比正常睡眠者更加精力充沛。
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