The law of ideal gas is a basic concept in physics.

He narrowly escaped from the accident.

He hit his jawbone hard.

She is famous for her large breasts.

He seems diffident in the new environment.

He lost his nerve in front of a large crowd.

He is a devoted teacher, always doing his best for his students.

During the ice age, most of the earth was covered in ice.

He went outside through the airlock of the spaceship.

I was surprised by his openness.