If you don't have regular dental check-ups, you may develop periodontitis.

The children are having fun playing in the playground.

His passionate performance captivated the audience.

He gave a passionate performance on stage.

He made a semicircular table.

I use rock salt in this dish to give it a special flavor.

My relationship with him is exactly an unhealthy but unescapable relationship.

Today's dessert is tangyuan.

This restaurant is non-smoking.

The airplane flew as if drawing a great circle of the earth.