centering
 定中心


 centering
 定中心


 Cen·ter, Cen·tre  v. i. [imp. & p. p. Centered or Centred p. pr. & vb. n. Centering or Centring.]
 1. To be placed in a center; to be central.
 2. To be collected to a point; to be concentrated; to rest on, or gather about, as a center.
    Where there is no visible truth wherein to center, error is as wide as men's fancies.   --Dr. H. More.
    Our hopes must center in ourselves alone.   --Dryden.


 Cen·ter·ing, n. Arch. Same as Center, n., 6. [Written also centring.]

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 centering
      n 1: the concentration of attention or energy on something; "the
           focus of activity shifted to molecular biology"; "he had
           no direction in his life" [syn: focus, focusing, focussing,
            direction]
      2: (American football) putting the ball in play by passing it
         (between the legs) to a back; "the quarterback fumbled the
         snap" [syn: snap]