他的医生对这种长期失眠的奇怪状况感到困惑。
His doctors were puzzled by the strange case of permanent sleeplessness.
正如长期失眠后经常发生的那样，他总是莫名其妙地惊慌。
As often happens after long sleeplessness, he was seized by an unreasoning panic.
每年由于广泛的长期失眠而引起的问题要损耗无数的金钱。
Our economy loses billions every year because of problems caused by widespread, chronic sleep deprivation.
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