He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

He is collecting centime, the old currency of France.

Polyoxymethylene is a plastic that excels in heat resistance and wear resistance.

This product is made of polystyrol.

The steward is conducting a safety check inside the aircraft.

He spent time preparing for the speech.

I like trying new cosmetics.

The sixteenth day is my birthday.

The entablature of this building reflects the architectural style of ancient Greece.

He is bad at athletics, especially ball games.