This time, it was a photosynthesizing bacterium that got gulped up.

这一次，是一种光合作用细菌被吞噬了。

When a pufferfish sees a potential threat, like a tiger shark or a scuba diver, they start quickly gulping up water.

当河豚看到潜在威胁时， 例如虎鲨或水肺潜水员，它们会开始迅速吞水。

And then something happened between two microscopic cells that, well, it changed everything: At least 1.7 billion years ago, one cell just gulped up another one.

然后两个微观细胞之间发生了一些事情，从而改变了一切：至少 17 亿年前，一个细胞吞噬了另一个细胞。