He has a violent and reckless character, often acting before thinking.

He is studying the shape of the inner lip of the shell.

Learning the rules of the new kana is difficult.

He was always envious of others' success, saying that the grass is always greener on the other side.

This anime, moar!

She's always a goody two shoes, and is well-liked by her teachers.

He is our class representative.

The Bronze Age was an important period in human history.

He is a specialist in cardiology.

The doctor examined my heart using a stethoscope.