This is the second time I've been to this restaurant.

In a split second, the car swerved to avoid hitting the pedestrian.

On second thought, I think I'll pass on going to the party.

He made a decision in a fraction of a second.

His aunt's apple pie was delicious and he had a second helping.

I played a thirty-second note on the piano.

She went on vacation to get her second wind.

The second-story man broke into the house through the window.

The speed of light is measured in meter-kilogram-second units.

The centimeter-gram-second (cgs) system is a unit system commonly used in physics.