人类用火可以吃熟的食物，保持温暖，还能用它击退野兽。

With fire on demand, mankind can eat cooked food, keep warm and use it to wild animals at bay.

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我们每天得到的多达80%的钠是来自这些加工过和熟的食物——而不是你自己加的盐。

As much as 80% of the sodium we get every day comes from these processed and prepared foods — not the salt shaker.

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一个密封条或门上有漏缝的微波炉可能使毗邻的食物变熟但这很少见。

A microwave with a leaky seal or door may conceivably cook adjacent foods, but that would be rare.

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