Phrases Talking about Hobbies and Interests

I'm developing a keen interest in...

Meaning

My interest in something is growing.

Translation language

John: Have you found any new hobbies recently?
Alice: Yes, <b>I'm developing a keen interest in</b> astronomy.
John: That's fascinating!
Alice: It really is. I'm reading a lot about it; <b>I'm developing a keen interest in</b> the cosmos.