He tried to solve the problem all day long.

One side of the park was covered with beautiful flowers.

Let's finish this job for now and then move on to the next.

His son was born with clubfoot.

In geomorphology, an antidune is a special type of sand dune that forms on the downstream side of a water flow.

He started walking around the room in an anticlockwise direction.

Retroflex sounds are difficult to pronounce.

He deeply studied the history of anti-Semitism.

My grandmother drinks Panax ginseng tea every day.

Pentathlon is a competition that tests both physical strength and technique.