An evolutionary biologist would say physical activity is the only voluntary means you have of varying or regulating your energy expenditure.
一个进化生物学家会说体力活动是唯一的志愿就是你的不同或管理您的能源开支的。
An evolutionary biologist would say physical activity is the only voluntary means you have of varying or regulating your energy expenditure.
一个进化生物学家会说体力活动是唯一的志愿就是你的不同或管理您的能源开支的。
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