释义
n. 真空,空间,真空吸尘器 a. 真空的,产生真空的,利用真空的 v. 用吸尘器打扫
例句
1. His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。 2. Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。