The black grouse is known for its beautiful feather color.

There were many waterfowls in the pond at the park.

Guano is very valuable as a fertilizer.

I heard the beautiful voice of a songbird in the park.

He missed school due to poor physical health.

We need to conduct a factual investigation on this issue.

Natural language understanding is an important field of artificial intelligence.

He decided to read another book.

Please read this guidebook and get information about the tourist spots.

When studying the history of Egypt, you cannot ignore the existence of the Book of the Dead.