双语例句原声例句
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当食物稀缺并需要动物消耗体力去捕食时，增加对非偏好品的渴望能帮助动物吃下他们所获得的食物，即使尝着味道真的不怎么样。
When food is scarce and animals exert energy to retrieve food, increasing the desirability of less tasty food would help animals eat what they had caught, regardless of its inherent tastiness.
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此前的研究显示，他们的日常能量消耗与大多数美国人差不多，这表明体力活动并非他们身体相对健康的原因。
Previous research shows that their daily energy expenditure is about the same as most Americans, suggesting physical activity is not the reason for their relative good health.
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即由于体力消耗，在他们的血液内产生了多少乳酸，及这些乳酸对健康的影响。
It indicates how much lactic acid has collected in their blood as a result of physical exertion and enables conclusions to be drawn about their fitness.
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And then there would be the butchering of the animal, there would be the securing the crops from the fields, and then bringing it to wherever you were going to eat it, which burns more calories and requires more physical effort, compared to the person on the right that really doesn't have to do much at all.
然后,他们要屠宰动物,要看护好地里的庄稼,还要把食物带到进食的地方,与右边的人相比,他们消耗更多卡路里,需要更强的体力,后者根本不必需付出那么多
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