目前常用的几种间隙模型都存在一定的不足，不完全符合实际运动。

These kinds of passing model can not exactly coincide with the actual motion.

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由于证据不足，掀起了一场为取得复审的运动。

The evidence was flimsy, and a campaign was launched to secure a re-trial.

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还有就是开展和普及网球运动都面临的问题：场地的不足。

There is the development and popularization of tennis all the problems:lack of venue.

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美中不足的是缺少能使五脏六腑也动起来的内在运动。

However, it does not help the internal organs to exercise.

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这个足球运动员的速度弥补了他个子矮小的不足。

The football player's speed compensated far his small size.

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28%的年轻人表示，由于睡眠不足而没劲儿运动。

Some 28 percent of adolescents say they are too tired to exercise, due to sleep.

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28%的年轻人表示，由于睡眠不足而没劲儿运动。

Some 28 percent of adolescents say they are too tired to exercise, due to sleep.

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