She has single eyelids.

His double personality confuses me.

He bears a double responsibility.

Japan's heavy industry is famous worldwide.

He holds dual citizenship in America and Japan.

Rui loves baseball.

The characters in this novel are complex and intriguing, like a stack.

The fire alarm went off, so we immediately evacuated the building.

This is the souvenir I brought back from my trip.

The kernel is the central part of a computer's operating system.