alternation

英 [ˌɔːltəˈneɪʃn]

美 [ˌɔːltərˈneɪʃn]

n.  交替，变换，间隔

复数：alternations　

TOEFL计算机

BNC.21330 / COCA.24407

柯林斯词典

The verb is pronounced /'ɔːltəneɪt/. The adjective and noun are pronounced /ɔːl'tɜːnət/. 动词读作 /'ɔːltəneɪt/，形容词和名词读作 /ɔːl'tɜːnət/。


• V-RECIP-ERG （使）交替；（使）轮流
  When youalternatetwo things, you keep using one then the other. When one thingalternates withanother, the first regularly occurs after the other.
  1. Her aggressive moods alternated with gentle or more co-operative states...
     她情绪多变，时而咄咄逼人，时而又显得温柔平和或乐于合作。
  2. The three acts will alternate as headliners throughout the tour...
     这3个节目将在整个巡回演出中轮流打头牌。
  3. Now you just alternate layers of that mixture and eggplant...
     现在你只需把茄子和拌料一层层交替放好。
  4. The band alternated romantic love songs with bouncy dance numbers.
     乐队轮番献上浪漫情歌和劲歌热舞。
  5. ...an imaginative novel, with alternating chapters presenting each partner's point of view.
     分章节轮流呈现各个角色观点的富有想象力的小说
• ADJ 交替的；轮流的
  Alternateactions, events, or processes regularly occur after each other.
  1. They were streaked with alternate bands of colour.
     它们都带有各种色彩相间的条纹。
• ADJ 每隔一（天等）的
  If something happens onalternatedays, it happens on one day, then happens on every second day after that. In the same way, something can happen inalternateweeks, years, or other periods of time.
  1. Lesley had agreed to Jim going skiing in alternate years.
     莱斯莉已同意吉姆每隔一年去滑一次雪。
• ADJ 供选择的；备用的；其他的
  You usealternateto describe a plan, idea, or system which is different from the one already in operation and can be used instead of it.
  1. His group was forced to turn back and take an alternate route.
     他的小组被迫返回并选择了另一条路线。
  2. ...alternate forms of medical treatment.
     其他可供选择的医疗方案
• N-COUNT 代替者；候补者
  Analternateis a person or thing that replaces another, and can act or be used instead of them.
  1. In most jurisdictions, twelve jurors and two alternates are chosen...
     大多数辖区都会选出12名陪审员和2名候补陪审员。
  2. The six food groups include grain products, vegetables, fruits, milk and milk products, meats and meat alternates, and a miscellaneous group.
     这6类食物包括谷类产品、蔬菜、水果、牛奶和奶制品、肉类和肉类替代品以及杂类食品。
• ADJ （尤其在美国英语中，当alternative作义项3、4和5解时，代替alternative使用）
  Alternateis sometimes used, especially in American English, instead ofalternativein meanings 3, 4, and 5.
  1. ...an alternate lifestyle.
     另一种生活方式

英英释义

noun

• successive change from one thing or state to another and back again
  1. a trill is a rapid alternation between the two notes

双语例句

• The gamete-producing individual or phase in the life cycle of a plant having alternation of generations.
  在一种植物的生命周期中产生配偶子的个体或阶段，从而引起一代代的更替。
• Spellings vary slightly, but the general notions of quantification, alternation, and sequencing exist in all EBNF-style language grammars.
  拼写稍有不同，但是量化、交替和定序这些一般概念都存在于所有ebnf样式的语言语法中。
• These modifications include the chemical alternation of the bases.
  这种修饰作用包括碱基的化学变化。
• A study on the MTI cancellation method based on pulse-to-pulse alternation of modulation slopes
  基于脉间调制斜率交变的MTI对消方法研究
• They have the common characteristic of alternation between dialogue and stanzas.
  在对话和韵诗之间他们有一般的特点。
• Examples of quasi-random methods of assignment include alternation, date of birth, and medical record number.
  准随机分配方法包括：交替分配，根据出生日期分配及根据病例号分配等。
• Light and shade come in swift alternation; Days and months flash by as quickly as a weaver's shuttle.; Light travels like an arrow, and time like a shuttle.
  光阴似箭，日月如梭。
• Design decision of complete machine, compact conformation and high speed full auto roll alternation.
  整机设计精致，结构紧凑，高速全自动换卷。
• So far, you've seen literal, positional, and two kinds of alternation operators.
  到目前为止，已经介绍了字面值、位置和两种备选项操作符。
• The alternation operator (|) matches either the preceding or following expression.
  交替操作符（）匹配前置或后置表达式。它必须匹配前一个或后一个表达式之一。