The crawling baby is playing in the living room.

A phonon is a physical concept that represents the vibration of a crystal lattice.

The piston of the engine is moving.

The boy is playing in the park.

Liezi was a Taoist philosopher.

Mozi's thoughts had a great influence on ancient Chinese philosophy.

He finished his work and went home at midnight.

The children are playing in the park.

This dango is very delicious.

The inner slats of this fan are made very finely.