The biker gang is causing a commotion in the town.

I will participate in an obstacle race this weekend.

A circumfix is a morpheme that creates a new meaning by attaching to the front and back of a word.

The circumpolar star is always visible in the north.

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

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

We visited the moated burial mound and learned about the lives of ancient people.

This game is really fun from the second playthrough.

I'm sorry, but I don't speak Japanese.

I'm a Muslim, so I fast during Ramadan.