李奇曼：于是，科学家研究了这些幼虫饮食的影响，结果发现了，其实，每天吃两三只幼虫，就能满足了乌鸦一整天的能量需求。
LICHTMAN: and so they looked at the dietary impact of the larvae and found that, in fact, maybe two or three of these larvae a day covers all of the crow's energy needs.
李奇曼：于是，科学家研究了这些幼虫饮食的影响，结果发现了，其实，每天吃两三只幼虫，就能满足了乌鸦一整天的能量需求。
LICHTMAN: and so they looked at the dietary impact of the larvae and found that, in fact, maybe two or three of these larvae a day covers all of the crow 's energy needs.
研究结果发现，尽管蝴蝶和幼虫的饮食与身体组织中都含有大量的多不饱和脂肪酸，但幼虫却要比蝴蝶胖3倍。
While both the butterfly and larva diets and tissues had high concentrations of polyunsaturated fatty acids, the larva had nearly three times more fat than the butterfly.
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