尽管这些饮料对参加长时间、高强度的体育训练的年轻运动员很有用，但这类饮料往往在不必要的情况下被过度饮用。
Although they may be useful for young athletes participating in prolonged, vigorous physical exercise, they tend to be overused and are usually unnecessary.
真实硬件的行为通常是很难控制它重复同一个行为动作的同一个动作硬件，但这个功能往往对驱动程序调试很有用。
The behavior of real device is usually difficult to control to reoccur some cases. But this capability is required in driver debugging.
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