Axion is a hypothetical subatomic particle and is considered a candidate for dark matter.

He is my benefactor, he helped me in my difficult times.

His mild personality attracts people quickly.

Where did this sound source come from?

He is playing a new game online.

It's high temperature today, it's hard to go out.

Phonetic collocation indicates the combination of sounds of words.

This mug has high heat retention, so the coffee stays hot for a long time.

This room is soundproofed, so there's no problem listening to music at high volume.

We decided to soundproof this room.