例如，巨噬细胞(“道路清扫工”)可以寻找和清除异样微粒。

For example, a macrophage (" road sweeper ") can find and remove strange particles.

更确切地说，今天谁会成为这个城市的垃圾清扫工？

More specifically, what is it to be a sanitation worker in the city today?