He is a world-renowned ichthyologist.

He found forensic evidence.

Looking up at the Big Dipper, I feel at peace.

Life is a series of vicissitudes.

Due to the company's tough financial situation, everyone's salary has been cut.

Protein-degrading enzymes play a role in breaking down unnecessary proteins in the body.

He was diagnosed with amyotrophic lateral sclerosis.

He couldn't hide his jealousy towards her success.

He picked up the whip and started practicing.

He is using a chainsaw to cut the tree.