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TOEFL IELTS BNC: 3576 COCA: 4370

filter

noun
 
/ˈfɪltə(r)/
/ˈfɪltər/
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  1.  
    a device containing paper, sand, chemicals, etc. that a liquid or gas is passed through in order to remove any materials that are not wanted滤器；过滤器
    • an air/oil filter空气过滤器；滤油器
    • a coffee/water filter咖啡过滤器；滤水器
    • filter paper for the coffee machine咖啡机滤纸
    • He smokes cigarettes without filters.他吸没有过滤嘴的香烟。
    Topics Scientific researchc1
  2. a device that allows only particular types of light or sound to pass through it滤光器；滤声器；滤波器
    • The camera has an anti-glare filter.这种相机有防眩光滤光器。
  3. (computing计算机) a program that processes information to leave out the types that are not wanted, or that stops particular types of electronic information, email, etc. from being sent to a computer筛选（过滤）程序
    • Spam filters block out almost all threats.垃圾邮件过滤器可以屏蔽几乎所有的威胁。
    Topics Phones, email and the internetc2
  4. (British English) a light on a set of traffic lights showing that traffic can turn left (or right) while traffic that wants to go straight ahead or turn right (or left) must wait（交通红灯指示不得直行的同时，表示可左转或右转的）分流指示灯
    • a filter lane分流车道。
    5. Word Originlate Middle English (denoting a piece of felt): from French filtre, from medieval Latin filtrum ‘felt used as a filter’, of West Germanic origin and related to felt.

filter

verb
 
/ˈfɪltə(r)/
/ˈfɪltər/
Verb Forms
present simple I / you / we / they filter
/ˈfɪltə(r)/
/ˈfɪltər/
he / she / it filters
/ˈfɪltəz/
/ˈfɪltərz/
past simple filtered
/ˈfɪltəd/
/ˈfɪltərd/
past participle filtered
/ˈfɪltəd/
/ˈfɪltərd/
-ing form filtering
/ˈfɪltərɪŋ/
/ˈfɪltərɪŋ/
Phrasal Verbs
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  1.  
    [transitive] filter something to pass liquid, light, etc. through a special device, especially to remove something that is not wanted过滤
    • All drinking water must be filtered.所有饮用水必须经过过滤。
    • Use a sun block that filters UVA effectively.使用能有效滤掉长波紫外线的防晒霜。
    • (figurative) My secretary is very good at filtering my calls (= making sure that calls that I do not want do not get through).我的秘书很会替我推掉不相干的电话。
    see also filtration
    Wordfinder
  2. [transitive] filter something to use a special program to check the content of emails or websites before they are sent to your computer（用程序）筛选，过滤
  3. [intransitive] + adv./prep. (of people人) to move slowly in a particular direction缓行
    • The doors opened and people started filtering through.门开了，人们开始徐徐通过。
  4. [intransitive] + adv./prep. (of information, news, etc.信息、新闻等) to slowly become known慢慢传开；走漏
    • More details about the crash are filtering through.关于这场空难的具体情况慢慢披露了。
  5. [intransitive] + adv./prep. (of light or sound光或声) to come into a place slowly or in small amounts渗入；透过
    • Sunlight filtered in through the curtains.阳光从窗帘透了进来。
  6. [intransitive] (British English) (of traffic at traffic lights交通指示灯处的交通) to turn left (or right) at traffic lights while other vehicles wanting to go straight ahead or turn right (or left) must wait仅可左转行驶Topics Transport by car or lorryc2
    7. Word Originlate Middle English (denoting a piece of felt): from French filtre, from medieval Latin filtrum ‘felt used as a filter’, of West Germanic origin and related to felt.
TOEFL IELTS BNC: 3576 COCA: 4370
TOEFL IELTS BNC: 3576 COCA: 4370
filter

verb

filter ♦︎ purify ♦︎ refine ♦︎ strain ♦︎ sieve ♦︎ siftThese words all mean to separate sth from sth else, especially a solid from a liquid or larger solids from smaller solids. 这些词均表示过滤、筛。PATTERNS AND COLLOCATIONS 句型和搭配◆to filter / strain / sieve / sift sth into sth◆to filter / strain / sieve sth through sth◆to filter / purify air / water◆to refine / sieve / sift sugar◆to sieve / sift flour◆to be finely sieved / sifted■ filter [transitive] to pass a substance or light through a special device, especially to remove sth that is not wanted 过滤（物质或光线）◆All drinking water must be filtered.所有饮用水必须经过过滤。◆Use a sunblock that filters UVA effectively.使用能有效滤掉长波紫外线的防晒霜。◆The air was improving as the recyclers filtered out the smoke.由于循环净化器过滤掉了烟雾，空气质量正在改善。■ purify ˈpjʊərɪfaɪ; NAmE ˈpjʊrɪfaɪ [transitive] to make sth pure by removing substances that are dirty, harmful or not wanted 使洁净；净化◆One tablet will purify a litre of water in 10 minutes.一片即可在10分钟内净化1升水。◆House plants can help to purify the air.室内盆栽有助于净化空气。▸ purification ˌpjʊərɪfɪˈkeɪʃn; NAmE ˌpjʊrɪfɪˈkeɪʃn

noun

 [uncountable] ◆a water purification plant滤水厂■ refine rɪˈfaɪn [transitive] to make a substance pure by taking other substances out of it, especially as part of an industrial process 精炼，提炼，去除杂质（尤指作为一道工序）◆The process of refining oil produces several useful chemicals.炼油的过程会产生几种有用的化学品。■ strain [transitive] to pour food or another substance through sth with very small holes in it, for example a sieve, in order to separate the solid part from the liquid part 滤，滤掉（多余的水分）◆Use a colander to strain the vegetables.把蔬菜放在滤器里控控水。◆Strain off any excess liquid.滤掉多余的水分。■ sieve sɪv [transitive] to put sth through a sieve 筛；过筛；滤◆Liquidize or sieve half the soup and return it to the pot.把一半的汤打成浓汁或者滤一下，再倒回锅里。ⓘ A sieve is a tool for separating solids from liquids or larger solids from smaller solids, made of a wire or plastic net attached to a ring. The liquid or small pieces pass through the net but the larger pieces do not. * sieve指筛子、笊篱、漏勺等滤器。■ sift [transitive] to put flour, sugar or some other fine substance through a sieve or sifter 筛（面粉、糖或其他颗粒较细的物质）◆Sift the flour, baking powder and salt into a bowl.把面粉、发酵粉和盐筛到碗里。ⓘ In American English a sifter is a small sieve used especially for sifting flour. 在美式英语中，sifter尤指面粉筛子。
TOEFL IELTS BNC: 3576 COCA: 4370

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