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 couldn't let go of his grudge against her.

He received a reward for his brave action.

Mr. Sonoda is my best friend.

Please wait a moment.

When it becomes July, summer vacation begins.

Despite his youth, he is well-versed in worldly wisdom.

I saw a bee in the park.