This shell's outer lip has a very beautiful pattern.

He was struggling to perform external rotation of the shoulder.

They appear to be antagonistic on the surface, but in reality, they are seemingly not part of the same group.

We should always remember the power of Kannon in difficult times.

He is undergoing training for extravehicular activity.

He engaged in an extravehicular activity from the spaceship.

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

I have been to Outer Mongolia.

Coitus interruptus is one method of contraception, but it is not completely reliable.

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