There are many introduced species of plants living in this park.

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.

This book explains in detail about the use of foreign words.

He spent his money as quickly as 'a duck comes bearing green onions', which means a fool and his money are soon parted.

Since he is always laughing, it can be said that 'fortune comes in by a merry gate'.

After he solved the problem, he said, 'It's like seeing the true form of a ghost or a withered silver grass,' meaning things are not as scary as they seem.

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

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