His smile was ephemeral, disappearing in an instant.

I'm always impressed by his astonishing talent.

He always has a critical attitude.

This club has an exclusive membership.

I can't keep up with his irregular schedule.

He always thinks about things from an objective perspective.

This product is popular nationwide.

This building is a symbolic landmark of our town.

He undergoes a health checkup periodically.

We need drastic reforms.