Bats fly.

Meaning: This means that bats are able to move through the air by flapping their wings. It's like saying, Bats can move through the air without touching the ground.

Choice of Words: Bats are nocturnal flying mammals. Fly means to move through the air using wings. When you put them together, "Bats fly" means that bats are able to move through the air by flapping their wings.

Alternative Expressions

Related Expressions