vacuum
英 ['vækjʊəm]
美['vækjʊəm]
	    - n. 真空;空间;真空吸尘器
 - adj. 真空的;利用真空的;产生真空的
 - vt. 用真空吸尘器清扫
 
英英释意
- 1. the absence of matter
 
- 2. an empty area or space;
 - "the huge desert voids"
 - "the emptiness of outer space"
 - "without their support he'll be ruling in a vacuum"
 
- 3. a region empty of matter
 
- 4. an electrical home appliance that cleans by suction