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TOEFL IELTS BNC: 6903 COCA: 5718
span
noun [C] [usually singular] /spæn/
singularspan
pluralspans
  1. 1
    the amount of time that something lasts 持续的时间

    Nearly 100 witnesses testified over a span of 20 days. 在20天内有近100名证人出庭作证。

    attention/concentration span (=the period for which you can pay attention/concentrate) 注意力集中的时间 :

    Kids these days have a very limited attention span. 现在的孩子们注意力集中的时间非常有限。

     Synonyms and related words
    See also lifespan
  2. 2
    the width of something 宽度

    With a span of one mile, it's the region's longest bridge. 桥的跨度有1英里,是这个地区最长的桥。

    The spider has a 3-inch leg span. 蜘蛛脚伸开有3英寸长。

     Synonyms and related words
    Length, width and depth: length, width, depth...
  3. 3
    the differences included in something that you are considering or calculating 数值范围
     Synonyms and related words
    Limits, controls and ranges: red line, limit, constraint...
See also
span
verb [T] /spæn/
present tense
I/you/we/theyspan
he/she/itspans
present participlespanning
past tensespanned
past participlespanned
  1. 1
    to last for a particular period of time, especially a long period 持续(尤指一大段时间)

    His career spanned half a century. 他的职业生涯跨越了半个世纪。

     Synonyms and related words
  2. 2
    to include the whole of an area 覆盖;遍布;贯穿

    Our business spans the globe. 我们的业务遍布世界各地。

     Synonyms and related words
  3. 3
    if a bridge spans an area of water, it crosses it (桥)横跨

    Little grey bridges span the canals. 灰色的小桥横跨在运河上。

     Synonyms and related words
  4. 4
    to include a number of different things 包括

    a leisure business spanning hotels, restaurants, casinos, and pubs 包括宾馆、饭店、娱乐场和酒吧的休闲行业

     Synonyms and related words
TOEFL IELTS BNC: 6903 COCA: 5718
span

noun¹

1length長度ADJECTIVEfull全長broad, wide範圍廣泛a broad span of interests興趣廣泛clear淨跨徑The bridge has a clear span of 120 feet.這座橋淨跨徑為 120 英尺。15-foot, 500-metre/500-meter, etc. * 15 英尺、500 米等跨距wing (usually wingspan) 翼幅The bird has a three-foot wingspan.這隻鳥的翼幅為 3 英尺。
span

noun²

2length of time時間ADJECTIVE | VERB + SPAN | PREPOSITION | PHRASES ADJECTIVElong長時間brief, short短時間ten-day, two-week, etc. * 10 天、兩週等時間entire整個時間allotted分配的時間The speech continued well beyond its allotted span.這個講話大大超過了原定的時間。natural (especially BrE) 自然壽命to prolong life beyond its natural span延年益壽time時間長度life (usually lifespan) 壽命The average lifespan of an American is 75 years.美國人的平均壽命是 75 歲。the expected life span for boys born in the US在美國出生的男孩的預期壽命attention, concentration, memory注意力持續時間;記憶保持時間He has a short attention span.他注意力集中的時間很短。a limited attention span有限的注意力持續時間VERB + SPANcover跨越時間段The book covers the entire span of Arab history.這本書跨越了整個阿拉伯的歷史。PREPOSITIONover a/the span歷時⋯Developments were monitored over a span of two years.對開發的監控持續兩年。PHRASESa span of time, a span of years時間的/年份的跨度
TOEFL IELTS BNC: 6903 COCA: 5718
span noun
time2
span verb
lead3

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