He did his best to protect his younger brother.

This verb is a godan conjugation.

I made a mistake.

Surface meteorology is a part of meteorology that studies the interaction between the surface and the atmosphere.

He admits that he is bad at athletics.

Octans is one of the constellations in the southern hemisphere.

He felt cognitive dissonance between his actions and beliefs.

This model of the cubohemioctahedron is very beautiful, isn't it?

He is working round the clock.

I'm going shopping because I'm out of soy sauce.