Olfactory cells play an important role in allowing us to sense smells.

Olfactory cells play a role in sensing smells in the nose.

Neurons are responsible for transmitting information in the brain.

Macrophages play a role in taking in and breaking down foreign substances in the body.

Oocytes play an important role in the reproduction of organisms.

Multicellular organisms, unlike unicellular organisms, have specialized cells in their bodies that perform functions.

Believing that failure is a stepping stone to success, he challenged again.

Believing that failure leads to success, he continued to challenge himself over and over again.

He likes to take a walk in the park at dusk.

This fabric has high color fastness, so it is hard for the color to fade even when washed.