span是什么意思

span

英[sp?n] 美[sp?n]

n. 持续时间，间隔，跨度，墩距，范围；
v. 持续，横跨，跨越，包括，涵盖；

复数：spans;

第三人称单数：spans;

过去式：spanned;

过去分词：spanned;

现在分词：spanning;

同义词

n.
span的同义词之：全长;径距
distance measure reach stretch expanse extent
span的同义词之：桥
viaduct bridge
span的同义词之：间隔;距离
period interval spell
span的同义词之：其他释义
extent stretch width bridge breadth run extension reach distance interval period sheet length spell viaduct year latitude measure expanse universe

柯林斯高阶英汉双解学习词典释义

N-COUNT

间隔;期间

A span is the period of time between two dates or events during which something exists, functions, or happens.
例句
The batteries had a life span of six hours... 这些电池的寿命为 6 小时。 Gradually the time span between sessions will increase. 会议之间的间隔将逐渐延长。
N-COUNT

(注意力的)持续时间

Your concentration span or your attention span is the length of time you are able to concentrate on something or be interested in it.
例句
His ability to absorb information was astonishing, but his concentration span was short... 他吸收信息的能力令人吃惊，但是他的注意力持续时间很短。 Young children have a limited attention span and can't concentrate on one activity for very long. 小孩子的注意力持续时间十分有限，不能长时间地专注于一个活动。
VERB

持续;跨越;贯穿

If something spans a long period of time, it lasts throughout that period of time or relates to that whole period of time.
例句
His professional career spanned 16 years... 他的职业生涯持续了 16 年。 The film, spanning almost a quarter-century, tells the story of Henry Hill... 这部时间跨度将近四分之一世纪的影片讲述的是亨利·希尔的故事。
VERB

包括;遍及

If something spans a range of things, all those things are included in it.
例句
Bernstein's compositions spanned all aspects of music, from symphonies to musicals. 伯恩斯坦创作的乐曲涉及了从交响乐到音乐剧等音乐的各个方面。 ...a remarkable man whose interests spanned almost every aspect of nature. 一个兴趣广泛、几乎涉猎了自然学科所有领域的杰出男性
N-COUNT

宽度;宽幅

The span of something that extends or is spread out sideways is the total width of it from one end to the other.
例句
It is a very pretty butterfly, with a 2 inch wing span... 这是一只非常美丽的蝴蝶，翼展 2 英寸。 It may be that you are unaware of where your hip joint is; it is not at the waist but a good hand span below it. 这也许是因为你并不晓得髋关节的位置，它不在腰部，而是位于腰部以下一手拃宽处。
VERB

(桥等建筑物)横跨，跨越

A bridge or other structure that spans something such as a river or a valley stretches right across it.
例句
Travellers get from one side to the other by walking across a footbridge that spans a little stream. 游客通过一座横跨小溪的步行桥从一边来到另一边。 ...the humped iron bridge spanning the railway... 横越铁路的铁拱桥

英汉词典释义

n.
跨度, 跨径，（桥或拱的）墩距
The bridge has a span of 100 metres. 这座桥跨度为一百米。
两个界限间的距离
一段时间
The pupil's attention span was short. 这个小学生的注意力持续时间很短。
持续时间；范围，包括的种类；宽度，翼展
(五指张开时的)指距
一拃宽(通常为9英寸或23厘米)
全长；全幅
短距离；小范围
【统计学】数值范围；极差
vt.
建造跨越(某物的)桥或拱; 横跨
跨越, 穿越, 贯穿，持续
包括（广大地区）；涵盖（多项内容）
用拃丈量，用手度量
以手环绕(腰等)
(时间)持续；包括
His research in cancer that spanned 15 years has made considerable headway in the end. 他对癌症持续15年的研究终于取得了极大的进展。
套上(牲口)
缚住，扎牢
拉紧，张紧
adv.
完全地

英英词典释义

Noun
1. the complete duration of something;
"the job was finished in the span of an hour"
2. the distance or interval between two points
3. two items of the same kind
4. a unit of length based on the width of the expanded human hand (usually taken as 9 inches)
5. a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.
6. the act of sitting or standing astride
Verb
1. to cover or extend over an area or time period;
"Rivers traverse the valley floor", "The parking lot spans 3 acres""The novel spans three centuries"

行业词典

体育：跨度；跨距；张帆；扬帆；支索；孔间隔；
公路科技：跨径；
医学：跨距；指距：完全伸展的手拇指与小指指尖间的距离；
土木工程：跨度；
建筑：跨度；
机械：量程转换器；span-changing device 可将有效量程乘上一个被称为“量程因数”的系数(如0.1)的装置。；测量范围上限值与下限值之差。；
电力：档距；
电子学：量程；又称 :量程(range)；
电工：量程；又称 :量程(range)；
石油：间距；
航天：量程；
航空：翼展；左右机翼翼梢最外端点之间的距离。；
船舶：跨距；构件两支点间的距离。；
通信：区段；在网络中，有两个相邻节点间的部分。；
铁道：跨径；