Suddenly, I heard the sound of an explosion from afar.

This newly released smartphone is equipped with the latest technology.

Scientists are warning that this substance is carcinogenic.

He is struggling with the spelling pronunciation of English.

Learning about the nasal sound rule in Japanese is very important for understanding pronunciation.

He is a renowned person in that field.

Akira does not want his parents to come on class observation days.

My high school has very strict rules.

His filial piety towards his parents is wonderful.

He is truly a dutiful son to his parents.