Infrasound is a type of sound that is inaudible to the human ear.

Debuccalization refers to the phenomenon in phonetics where a specific sound is pronounced outside the oral cavity.

Hiroshi is a very tolerant person who can be kind to anyone.

As his name 'Kan' suggests, he is a very tolerant person.

He yielded to the pressure.

I saw a swallow flying in the sky.

He always follows the teaching of 'Never invite suspicions needlessly,' and avoids actions that may cause suspicion.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Understanding the concept of 'Ha-line conversion sounds' is important in learning Japanese.

The slope continues ahead, so please be careful when driving.