He underwent surgery on his inguinal canal.

The syrinx of birds can produce different sounds depending on the species.

This old radio uses a triode.

This old clock uses a Nixie tube.

He is managing the game as a server administrator.

He got lost in a cul-de-sac.

He underwent surgery for a ureteral stone.

He was relaxing while smoking a hookah.

The duct design of this building is very complex.

The gas pipe is broken and gas is leaking.