The National Aeronautics and Space Administration announced a new space exploration plan.

He is working hard.

I like to hang out with friends who have the same hobbies.

He is troubled with his work.

His body was covered in muscles.

This sculpture is made of pure copper.

A verb plays the role of expressing actions or states in a sentence.

He always acts based on humanity.

Bottlenose dolphins are considered to be particularly intelligent among marine animals.

He is planning a transfer from Tokyo to Osaka.