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

He recognizes the danger of extremism.

It is said that he possesses the three sacred treasures.

He became obsessed with publicly-owned gambling enterprises and used up all his savings.

He was deceived by a swindler and lost a lot of money.

The continental slope is a part of the seafloor topography, connecting the continental shelf and the deep sea floor.

The SI system is a standard unit system used worldwide.

My uncle is a famous zoologist.

He is a world-renowned ichthyologist.

I use a tram for commuting every day.