The parallels on the earth continue from the equator to the North Pole.

This problem can be solved by solving equations with linearity.

Hygiene is very important in daily life.

Her dress was a vivid lemon color, and it stood out.

He is majoring in petrology at university.

Analytical chemistry is a science for clarifying the components and structure of substances.

He is an expert in tidology, studying the fluctuations of the sea's tides.

Uchuu-kun, have you finished your homework for today yet?

He received the letter challenging him to a duel and began preparing for the duel.

He has a deep interest in astronomy.