大雪使学校上课时间推迟了两小时。
尽管如此，研究者说试验结果表明推迟学校上课时间是值得的。
Still, the researchers said the results show delaying school starting times is worthwhile.
根据他这项24小时人体节奏性的研究结果，凯利博士呼吁学校上课时间和企业上班时间应重新调整。
Dr Kelley called for staggered start times at schools and workplaces as a result of research into the human body's 24 hour rhythms.
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