科学家推断我们那么多人易于堆积脂肪的部分原因在于“节俭基因”。
Scientists speculate that part of the reason so many of us are susceptible to layering on fat is due to the "thrifty gene."
试图解释为什么人类倾向于变胖的研究者们许多年来一直沿用“抗节俭基因”假说。
For years, researchers seeking to explain why people are prone to get fat have used the "thrifty gene" hypothesis.
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