span

C1 CET-4 Oxf 5000 大学 FREQ #12072 ★★☆☆☆

n. 指距, 全长, 跨距, 一段时间, 小范围 vt. 以手指测量, 跨越, 架设, 持续

发音

US /spæn/
UK /spæn/
AU /spæn/
AU /spæːn/

词形变化

spans 复数 spans spans 三单 spanning 现在分词 spanned 过去式 spanned 过去分词

别名

BASE spun

教材释义与例句

名词

跨度,跨距;范围

释义与例句

n. C1 Oxf 5000
  1. 1.

    The full width of an open hand from the end of the thumb to the end of the little finger used as an informal unit of length.

  2. 2.

    Any of various traditional units of length approximating this distance, especially the English handspan of 9 inches forming ⅛ fathom and equivalent to 22.86 cm.

  3. 3.

    A small space or a brief portion of time.

    引申义

    He has a short attention span and gets bored within minutes.

  4. 4.

    A portion of something by length; a subsequence.

  5. 5.

    The spread or extent of an arch or between its abutments, or of a beam, girder, truss, roof, bridge, or the like, between supports.

    建筑 商务 工程
  6. 6.

    The length of a cable, wire, rope, chain between two consecutive supports.

    建筑 商务 工程
  7. 7.

    A rope having its ends made fast so that a purchase can be hooked to the bight; also, a rope made fast in the center so that both ends can be used.

    航海 交通
  8. 8.

    The space of all linear combinations of vectors within a set.

    数学
  9. 9.

    The time required to execute a parallel algorithm on an infinite number of processors, i.e. the shortest distance across a directed acyclic graph representing the computation steps.

    计算机 工程 数学
  10. 10.

    A pair of horses or other animals driven together; usually, such a pair of horses when similar in color, form, and action.

    加拿大 美国
  11. 11.

    wingspan of a plane or bird

v. C1 Oxf 5000
  1. 1.

    To extend through the distance between or across.

    及物

    The suspension bridge spanned the canyon.

  2. 2.

    To extend through (a time period).

    及物

    The parking lot spans three acres.

    The novel spans three centuries.

  3. 3.

    To measure by the span of the hand with the fingers extended, or with the fingers encompassing the object.

    及物

    to span a space or distance; to span a cylinder

  4. 4.

    To fetter, as a horse; to hobble.

    及物
  5. 5.

    To generate an entire space by means of linear combinations.

    数学
  6. 6.

    To be matched, as horses.

    美国 过时 不及物
  7. 1.

    simple past of spin

    过时

词汇关系

相关短语

词源

From Middle English spanne, from Old English spann, from Proto-Germanic *spannō (“span, handbreadth”), from Proto-Indo-European *(s)pend- (“to stretch”). Cognate with Dutch span, spanne, German Spanne. The sense “pair of horses” is probably from Old English ġespan, ġespann (“a joining; a fastening together; clasp; yoke”), from Proto-West Germanic [Term?]. Cognate with Dutch gespan, German Gespann.

来源:wiktionary