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

He stuck out his tongue and licked the ice cream.

Phonetics is a part of linguistics that studies the physical, physiological, and psychological aspects of sounds.

The characteristic of this building is its unique design.

A lingual sound is a sound that uses the tongue when pronouncing.

His existence enriches my life.

You can feel his presence.

He has a curve in his back.

He is studying Japanese.

His speech sound is very attractive.