名词 n.

1.真空

Sound waves cannot travel through a vacuum.

声波不能在真空中传播.

2.〈口〉真空吸尘器

I mean to buy a vacuum next month.

下个月我打算买一台真空吸尘器。

3.空间; 空虚; 空白

His resignation has left a power vacuum at the head of the party.

他的辞职使得该党的领导位置出现了权力真空。

His wife's death left a vacuum in his life.

他妻子的去世使他的生活变得空虚。

及物动词 vt. 1.用真空吸尘器清扫(某物)

I vacuum the carpet twice every week.

我每周用吸尘器打扫地毯两次。

常用词组

in a vacuum 1. （需考虑的活动，问题）似在真空中；脱离现实