His role is the team leader.

Health is very important.

His opinion is very important.

Retroflex sounds are difficult to pronounce.

A coronal is a sound that is pronounced using the tip or the upper part of the tongue.

Retroflex is a phonetic feature that does not exist in Japanese.

A dorsal sound is a sound that is pronounced by the back of the tongue approaching or touching the palate or pharynx.

This audio is very clear.

The sound was so quiet that I could hardly hear it.

In Sanskrit phonology, the concept of triphthong is important.