span [ spænz ]

• n.
  • the complete duration of something

    "the job was finished in the span of an hour"

  • the distance or interval between two points
  • two items of the same kind

    同义词： couple pair twosome twain brace yoke couplet distich duo duet dyad duad

  • a unit of length based on the width of the expanded human hand (usually taken as 9 inches)
  • a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.

    同义词： bridge

  • the act of sitting or standing astride

    同义词： straddle

• v. to cover or extend over an area or time period

  "The parking lot spans 3 acres"; "The novel spans three centuries"

  同义词： cross traverse sweep

以上来源于: WordNet