The tauon plays an important role in particle physics.

The study of sound waves is an important part of acoustics.

Using earplugs can block out the surrounding noise.

He will never forget that special favor.

I live in Ontario.

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

This character sound is difficult, isn't it?

He couldn't let go of his grudge against her.

He received a reward for his brave action.

Om is one of the syllables in Sanskrit.