I am in the process of creating promotional materials for the new album.

Choosing the flooring for the new house is difficult.

This sternpost is made very sturdy.

He is wearing a jacket with reflective material for night running.

This box is filled with plenty of buffering material to protect the delicate glass products.

This lumber is used at the construction site.

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.

Kunminjōon is a book for teaching the correct pronunciation of Hangul.

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