vacuum

英 [ˈvækjuːm]

美 [ˈvækjuːm]

n.  真空; 真空状态; 空白; 空虚; (用真空吸尘器所做的)清洁，清扫
v.  用真空吸尘器清扫

复数：vacuums　第三人称单数：vacuums　现在分词：vacuuming　过去式：vacuumed　过去分词：vacuumed　

CET4CET6考研TOEFLIELTSTEM4TEM8

Collins.2 / BNC.5526 / COCA.4930

习惯用语

n.

in a vacuum
• 与世隔绝；脱离实际
  existing separately from other people, events, etc. when there should be a connection
• This kind of decision cannot ever be made in a vacuum.
  这种决定绝不能脱离实际。

牛津词典

noun

• 真空
  a space that is completely empty of all substances, including all air or other gas
  1. a vacuum pump (= one that creates a vacuum )
     真空泵
  2. vacuum-packed foods (= in a package from which most of the air has been removed)
     真空包装的食品
• 真空状态；空白；空虚
  a situation in which sb/sth is missing or lacking
  1. His resignation has created a vacuum which cannot easily be filled.
     他的引退造成了难以填补的空白。
• （用真空吸尘器所做的）清洁，清扫
  the act of cleaning sth with a vacuum cleaner
  1. to give a room a quick vacuum
     用吸尘器把房间迅速清扫一下

verb

• 用真空吸尘器清扫
  to clean sth using a vacuum cleaner
  1. Have you vacuumed the stairs?
     你用吸尘器清扫楼梯了吗？

柯林斯词典

• N-COUNT 空位;空缺;空白
  If someone or something creates avacuum, they leave a place or position which then needs to be filled by another person or thing.
  1. The collapse of the army left a vacuum in the area...
     这支军队的溃败使这个地区出现了军事真空。
  2. His presence should fill the power vacuum which has been developing over the past few days.
     他的出现将填补过去这几天形成的权力真空。
• PHRASE 在封闭状态中;与外界隔绝
  If something is donein a vacuum, it is not affected by any outside influences or information.
  1. Moral values cannot be taught in a vacuum...
     道德价值观的教育不能脱离实际。
  2. We lived in a vacuum — no life, no news, no books.
     我们生活在与世隔绝的环境里——没有其他生物，收不到外界消息，也没有书看。
• VERB 用真空吸尘器打扫
  If youvacuumsomething, you clean it using a vacuum cleaner.
  1. I vacuumed the carpets today...
     今天我用吸尘器清洁了地毯。
  2. It's important to vacuum regularly.
     定期用吸尘器吸尘很重要。
• N-COUNT 真空
  Avacuumis a space that contains no air or other gas.
  1. Wind is a current of air caused by a vacuum caused by hot air rising...
     风是由于热空气上升产生真空导致的一种气流运动。
  2. The spinning turbine creates a vacuum.
     旋转的涡轮形成了一块真空区域。

英英释义

noun

• an electrical home appliance that cleans by suction
  Synonym:vacuum cleaner
• a region that is devoid of matter
  Synonym:vacuity
• an empty area or space
  1. the huge desert voids
  2. the emptiness of outer space
  3. without their support he'll be ruling in a vacuum
  Synonym:voidvacancyemptiness
• the absence of matter
  Synonym:vacuity

verb

• clean with a vacuum cleaner
  1. vacuum the carpets
  Synonym:vacuum-cleanhoover

双语例句

• I mean to buy a vacuum next month.
  下个月我打算买一台真空吸尘器。
• I have to vacuum my room.
  我得用吸尘器吸吸我房间了。
• Equipment that involves the controlled conduction of electrons ( especially in a gas or vacuum or semiconductor).
  控制受限的电子传导的设备（尤其是在空气中或在真空中或在半导体中）。
• This equipment can't substitute proper ventilation and regular vacuum cleaning.
  这设备不能替换适当的通风和一般的真空清洁。
• Sound waves cannot travel through a vacuum.
  声波不能在真空中传播。
• In semiconductor receivers transistors take the place of vacuum tubes.
  在半导体收音机中晶体管代替了真空管。
• This is The French Laundry's vacuum sealing system.
  这是法国洗衣房的真空密封系统。
• This reaction was carried out in a vacuum ( 2) yesterday ( 1).
  例2。昨天（1）在真空中（2）进行了这个反应。
• The latest Japanese vacuum cleaners contain sensors that detect the amount of dust and type of floor.
  日本的最新真空吸尘器配有可探测灰尘多少和地板类型的传感器。
• It's important to vacuum regularly.
  定期用吸尘器吸尘很重要。