Each barrel is a completely different microcosm in its own, completely unique microbial population.

每个桶都是一个完全不同的微观宇宙，在它自己完全独特的微生物群中。

It depends on the resident microbial populations in your armpit, and the nutrients that your glands provide them with.

这取决于腋窝处寄生的的微生物总数以及汗腺为这些微生物提供的营养物质种类。

These unfortunate sacrificial beasts were then slaughtered and their entrails examine -- not for auguries of the future but for their microbial populations.

这些不幸的绵羊随后被屠宰，并检查了它们的内脏——不是为了预示未来，而是为了检查它们体内的微生物种群。