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TOEFL IELTS BNC: 3509 COCA: 4719

fraction

noun
 
/ˈfrækʃn/
/ˈfrækʃn/
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  1.  
    a small part or amount of something小部分；少量；一点儿
    • Only a small fraction of a bank's total deposits will be withdrawn at any one time.任何时候，一家银行的总存款只有少量会被提取。
    • She hesitated for the merest fraction of a second.她略微犹豫了一下。
    • He raised his voice a fraction.他把声音提高了一点。
    If fraction is used with a plural noun, the verb is usually plural: Only a fraction of cars in the UK use leaded petrol. If it is used with a singular noun that represents a group of people, the verb can be singular or plural in British English, but is usually singular in North American English: A tiny fraction of the population never vote/votes.
    Extra Examples
    • A mere fraction of available wind energy is currently utilized.目前可用风能中只有一小部份得到了利用。
    • The average income is high, though many people earn just a fraction of that average.虽然人均收入很高，但是很多人只挣到了平均收入的一小部份。
    • Why not grow your own fruit at a fraction of the price?你为什么不自己种水果，比这个价格要便宜很多。
    Oxford Collocations Dictionaryadjective
    • large
    • significant
    • sizeable
    • …
    preposition
    • fraction of
    phrases
    • just a fraction
    • only a fraction
    See full entry
  2.  
    a division of a number, for example ⅝分数；小数
    • How do you express 25% as a fraction?25%用小数怎么表示？
    synonym rational number
    Language Bank proportionproportionDescribing fractions and proportions描述分数和份额
      • According to this pie chart, a third of students’ leisure time is spent watching TV.如饼分图所示，学生的闲暇时间有三分之一都花在看电视上。
      • One in five hours is/​are spent socializing.每五个小时中有一个小时花在社交活动上。
      • Socializing accounts for/makes up/comprises about 20 per cent of leisure time.社交约占休闲时间的20%。
      • Students spend twice as much time playing computer games as doing sport.学生们玩电脑游戏的时间是做运动时间的两倍。
      • Three times as many hours are spent playing computer games as reading.玩电脑游戏的时间是阅读时间的三倍。
      • The figure for playing computer games is three times higher than the figure for reading.玩电脑游戏的时间比阅读时间多两倍。
      • The largest proportion of time is spent playing computer games.大部分时间都花在玩电脑游戏上。
    compare integer see also common fraction, proper fraction, vulgar fractionTopics Maths and measurementb2
    Oxford Collocations Dictionaryadjective
    • vulgar
    • decimal
    • improper
    • …
    verb + fraction
    • express something as
    See full entry
  3. (chemistry化学) a quantity of liquid that has been collected as a result of a process that separates the parts of a liquid mixture分数：由于分离液体混合物各部分的过程而收集的一定数量的液体
    • The third fraction contains alchohols with boiling points of 120–130℃.第三部分包含沸点为120–130℃的醇。
    4. Word Originlate Middle English: via Old French from ecclesiastical Latin fractio(n-) ‘breaking (bread)’, from Latin frangere ‘to break’.

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