如果是，我们就不能适应一年四季中不同的昼夜时间差。

If it was, we couldn't adjust to seasonal differences in the length of nights and days.

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运动时间以秋季为最短，占昼夜时间的6%左右。

The moving time was shortest in autumn season, around 6% of the full day.

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本文观察了辽宁省1986 ~ 1991年5年间的594例急性心肌梗塞(ami)发病昼夜时间的分布情况。

Circadian distribution of on set of 594 cases of acute myocardial infarction (AMI) between 1986 and 1991 in Liaoning province was studied.

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