He discussed the dangers of the hydrogen bomb.

I bought a new bathing suit.

My hobby is keeping saltwater fish.

He bought new swimming trunks.

He is majoring in hydrology at university.

He is the type of person who can distinguish between good and bad.

You should protect your own health.

It's difficult to understand this text.

I am taking a class in Literary Chinese.

I often write a composition in Japanese every week.