vacuum

真空、真空状态

Sound cannot travel through a vacuum at all.

声音完全无法在真空中传播。

吸尘器

She dragged the vacuum up the stairs to clean the bedrooms.

她把吸尘器拖上楼去打扫卧室。

空白、真空、空缺

His sudden resignation left a vacuum at the top of the company.

他突然辞职，使公司高层出现了权力真空。

用吸尘器打扫、吸尘

I vacuum the living room carpet at least twice a week.

我每周至少用吸尘器清理客厅地毯两次。

真空的多作名词前修饰语

The coffee beans are sold in vacuum packaging to stay fresh.

这些咖啡豆以真空包装贩售以保持新鲜。