What is the sentence for microcosm?

There isn't a single "sentence" for microcosm, as it's a noun, not a sentence. However, you can use it in a sentence to describe something that reflects a larger, more complex system.

Here are some examples:

* "The small village was a microcosm of the larger society, with its own unique blend of cultures and traditions."

* "Her family was a microcosm of her entire life, full of both joy and sorrow."

* "The classroom is a microcosm of the real world, where students learn to interact and work together."

These sentences show how "microcosm" is used to represent a smaller-scale version of something larger.