I have been to Outer Mongolia.

He engaged in an extravehicular activity from the spaceship.

He is undergoing training for extravehicular activity.

He is a foreigner, but he can speak Japanese fluently.

If you train your external oblique muscles, your waist will become tighter.

He is doing a special exercise to strengthen his abductor digiti minimi.

He is doing special exercises to strengthen his abductor digiti minimi.

I started exercises to strengthen the abductor hallucis muscle.

She is beautiful like a peony when she stands, a peony when she sits, and a lily when she walks.

He is doing special exercises to strengthen his abductor pollicis brevis.