He bought new swimming trunks.

My hobby is keeping saltwater fish.

I am majoring in anatomy at university.

This area is still undeveloped and rich in nature.

This area is still undeveloped, and nature is abundant.

I was watching the setting sun in the park.

He used sonar to explore the seabed.

Every night, he starts working at midnight.

The inside of the train was crowded.

We have a duty to pay taxes.