His Japanese pronunciation is very natural.

He couldn't pronounce the word correctly.

She studies while listening to music.

The water temperature of the sea suddenly dropped.

His heartbeat echoed in my ears.

The speed of sound is about 343 meters per second in the air.

The structure of the speech organs greatly affects the pronunciation of language.

His speech sound is very attractive.

He specializes in tuning pianos.

His pronunciation has many sonants.