He is researching about a new energy source.

I am planning to take a vacation next week.

She was devastated by sadness and wailed.

She wailed in overwhelming sorrow.

Gekkyuden is a beautiful building.

He is nocturnal like a vampire.

I participate in kyudo practice every week.

We took a break for an hour.

The process of terraforming is part of transforming other planets into a habitable environment for humans.

I was born and raised in Kowloon.