And although Asimov's "positronic" brains do not exist, positrons are indeed used to probe human brains in positron-emission tomography (PET) scanning.

虽然阿西莫夫虚构的“正电子”大脑并不存在，但是正电子理论确确实实被应用于正电子衍射成像(PET)扫描技术上用来探索人类大脑。

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Technically, the U.S. Food and Drug Administration is responsible for ensuring that pet foods, like human foods, are safe to eat, truthfully labeled and produced under sanitary conditions.

从技术上而言，美国食品与药品管理局（FDA）对宠物食品负责，确保它们要像人类食品一样，要能安全食用，如实地贴上标签，并且要在卫生的条件下被生产出来。

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Pet insurance is structured similar to human health insurance, with pricing based on the age and breed of the pet.

FORBES: 3. Pet Insurance

No questionnaires are involved, and dolphins seem to worry about human observers about as much as humans would worry about an observant pet.

ECONOMIST: What maths tells us about us