Humans catch whales for meat, fat and oil.

人类捕鲸是为了获取鲸鱼肉、鲸脂和鲸油。

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In fact the difference in how efficiently their bodies convert feed into meat, fat, bone and hide might be surprising.

实际上，它们的身体将饲料转换为肉、脂肪、骨、皮的效率差异可能是令人惊讶的。

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In fact the difference in how efficiently their bodies convert feed into meat, fat, bone and hide might be surprising.

实际上，它们的身体将饲料转换为肉、脂肪、骨、皮的效率差异可能是令人惊讶的。

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