vaulting
  拱形圓頂,圓屋頂,跳(a.)跳的,跳過的,誇大的
  Vault v. t. [imp. & p. p. Vaulted; p. pr. & vb. n. Vaulting.]
  1. To form with a vault, or to cover with a vault; to give the shape of an arch to; to arch; as, to vault a roof; to vault a passage to a court.
     The shady arch that vaulted the broad green alley.   --Sir W. Scott.
  2.  To leap over; esp., to leap over by aid of the hands or a pole; as, to vault a fence.
     I will vault credit, and affect high pleasures.   --Webster (1623).
  Vault·ing, n.
  1. The act of constructing vaults; a vaulted construction.
  2. Act of one who vaults or leaps.
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  vaulting
       adj : revealing excessive self-confidence; reaching for the
             heights; "vaulting ambition" [syn: overreaching]
       n 1: (architecture) a vaulted structure; "arches and vaulting"
       2: a light leap by a horse in which both hind legs leave the
          ground before the forelegs come down [syn: curvet]