It looked like he had a bony spine on his back.

Mr. Koch is from Germany.

He is working as a member of the gendarmerie.

This fish has very vivid nuptial coloration, which it uses to attract females.

Believing that failure is a stepping stone to success, he challenged again.

Believing that failure leads to success, he continued to challenge himself over and over again.

He has fundamental knowledge of mathematics.

His recovery was truly miraculous.

He is respected as the head of state of our country.

His anger surged up suddenly.