People using Provigil or Ritalin may eventually be found to have a legitimate but previously unknown need for the drug.

最终可能会发现，那些人是出于先前不为人所知的正当理由，才服用Provigil或者利他灵的。

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Many people already use Provigil to cope with night-shift work, jet lag and lack of sleep, and suffer few side-effects.

很多人会在上夜班、长途飞行以及缺少睡眠时服用Provigil，只会有轻微的副作用。

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Many people already use Provigil to cope with night-shift work, jet lag and lack of sleep, and suffer few side-effects.

很多人会在上夜班、长途飞行以及缺少睡眠时服用Provigil，只会有轻微的副作用。

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