Looking at the population pyramid, you can see that this country is aging.

He is a loyal retainer of our house.

That person is my friend.

They decided to raid the enemy's camp.

He took on the job instead of me.

He is involved in the development of androids.

She announced that she is pregnant.

He needed a fathom's depth to ask that question.

The ship has sunk.

He couldn't recognize the character.