He wakes up early in the morning.

Choichiro went fishing.

Please stop deriding my dreams.

He has a weary character.

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.

My brother is a famous biologist.