His grandfather was a member of the Imperial Navy during World War II.

When he was young, he belonged to the Imperial Army.

The Imperial Japanese Navy and Army were a powerful military force in Japan.

Do you need a plastic bag?

I love earth sciences.

Let's talk about this case in detail later.

He said he knew nothing about the matter.

Let's discuss this matter later.

He was studying all day.

She wiped the sweat off her forehead.