He decided to challenge the exploration of the Dark Continent.

The Grand Duchy of Luxembourg is a small country in Europe.

The launch of intercontinental ballistic missiles has become an international issue.

He is preparing to explore the Dark Continent.

I studied Classical Chinese in university.

He is an expert in fluid mechanics.

His dynamic visual acuity as a baseball player is very excellent.

My opponens pollicis muscle hurts.

He is doing special exercises to strengthen the opponens digiti minimi muscle of his foot.

He underwent surgery due to an injury to the opponens digiti minimi muscle.