There are several em spaces between the paragraphs.

I used thin spaces to separate the words in the document.

The bookshelf has thick spaces between the shelves.

There are many breathing spaces in the park where people can relax and enjoy nature.

The factor spaces are essential for understanding the mathematical model.

The identification spaces are used to store user information.

Covering spaces are important in topology.

There are plenty of parking spaces available in the parking lot.

The ophthalmologist examined the pupillary spaces of the patient's eyes.

Euclidean spaces are mathematical spaces that satisfy the properties of Euclidean geometry.