The scientists studied the properties of Einstein spaces.

The intervillous spaces in the placenta play a crucial role in nutrient and gas exchange between the mother and the fetus.

She single-spaces her documents to save paper.

There are many en spaces between the words.

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.