His megalomania was that he would rule the world.

This product is just exaggeratedly advertised, it's not actually that good.

This eternally unchanging truth does not change even as the times change.

His belief is eternally unchanging.

His amateur radio call sign is JH1ABC.

He ordered a full-course dinner.

She was sitting in a ladylike manner.

I make bibimbap using gochujang.

My niece is very smart.

He has a strong desire to be in the spotlight and always wants to be the center of attention.