真空 (zhēn kōng): Vacuum (Noun) — Meaning & Stroke Order

This bottle is a vacuum.

Don't expect to start a fire in a vacuum; there is simply no oxygen there.

After he left his position, a management vacuum emerged, causing some temporary chaos in the team.

Vacuum packaging can extend the shelf life of food.

My newly bought vacuum insulated cup works really well; the coffee stays hot all day.