From diary entries and other personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion—that the average person used to sleep about 9.5 hours a night.
从18世纪和19世纪的日记和其他个人记录中，睡眠科学家已经得出结论——人的平均睡眠时间约为每晚9.5小时。
The conclusion was reached after an exhaustive study of 105 plane accidents and personal accounts from almost 2,000 survivors of how they managed to escape from crash landings and onboard fires.
这一结论是对105起飞机事故和约2,000名幸存者在紧急着陆和飞机起火事故中成功逃生的个人报告进行研究后得出的。
From the principle of personal budget restrict, analyse financial budget restrict, can draw a almost same conclusion.
从个人预算约束的原理分析财政的预算约束会得出几乎相同的结论。
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