Then, you cool down the milk a little bit, and add some heat-loving, or thermophilic, bacteria.

后，稍微冷却一下牛奶，再加入一嗜热菌。

One of the things we know, for instance, is that the “oldest” organisms, the ones that are nearest to the last common ancestor, are all thermophilic organisms.

如我们所知，像这生物非常相似于远古生物都是这样嗜温生物。