vacuity/væˈkjuːəti/复数形式vacuitiess1空虚, 无意义the state or quality of not being meaningful or significant同义词： pointlessnessmindlessnessinanitysenselessness2空虚, 真空an area that is completely empty of any physical substance同义词： vacuum3空虚, 物质的缺失the absence of matter同义词： vacuum