研究者说这有可能是由于哺乳动物向北部山脉移动、兽类短缺或是人类越来越偏爱其他的猎物种类造成的。
The researchers say this could be due to a northward range shift in the mammal, a scarcity of the beast, or an increasing human preference for other prey species.
但Kripke说这有可能是由于睡得多的人就容易遭受睡眠中的呼吸暂停,这是一种减弱呼吸给心脏和大脑带来压力的状况。
But Kripke said it was possible that people who slept longer tended to suffer from sleep apnea, a condition where impaired breathing puts stress on the heart and brain.
这有可能是真的,但这是由于石器时代形成的心理在起作用吗?
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