He rejoiced when he heard about the success.

He is interested in ichthyological research.

Knock-knock, someone is knocking on the door.

Thinking sensibly, that plan will not succeed.

He has astronomical knowledge.

He fell while skiing and broke his rib.

His success was an inevitable result.

He was overwhelmed by a feeling of powerlessness towards the situation.

For relaxation, I make it a point to take a vibration bath every night.

He is a world-famous philosopher.