spanning
 生成
 spanning
 跨距
 Span v. t. [imp. & p. p. Spanned p. pr. & vb. n. Spanning.]
 1. To measure by the span of the hand with the fingers extended, or with the fingers encompassing the object; as, to span a space or distance; to span a cylinder.
    My right hand hath spanned the heavens.   --Isa. xiviii. 13.
 2. To reach from one side of to the order; to stretch over as an arch.
    The rivers were spanned by arches of solid masonry.   --prescott.
 3. To fetter, as a horse; to hobble.
 span
      n 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 [syn: couple, pair, twosome,
          twain, brace, yoke, couplet, distich, duo, duet,
          dyad, duad]
      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. [syn: bridge]
      6: the act of sitting or standing astride [syn: straddle]
      v : 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" [syn: cross,
          traverse, sweep]
      [also: spanning, spanned]
 spanning
      See span