Meaning of cold sleep | Babel Free

Examples

“I hesitated, then added, "I'm going to take the Long Sleep. The cold sleep—you know what I mean."”

“Half a thousand colonists had left Sol system in cold sleep, with twenty crew.”

“Anyone who worked on cold sleep for humans would have to know about what the Lizards did so they could fly between the stars without getting old on the way.”

CEFR level