问题描述：
英语翻译
in japan.drowsy employees turning up late.taking days off or struggling to stay awake on the job are csusing economic losses of some 30 billion a year,according to a survry.
in japan.drowsy employees turning up late.taking days off or struggling to stay awake on the job are csusing economic losses of some 30 billion a year,according to a survry.
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