grasp /ˈgræsp/
  把握,抓緊,抓,柄,控制,理解(vt.)抓住,緊握,領會(vi.)抓
  Grasp v. t. [imp. & p. p. Grasper p. pr. & vb. n. Qraspine.]
  1. To seize and hold by clasping or embracing with the fingers or arms; to catch to take possession of.
     Thy hand is made to grasp a palmer's staff.   --Shak.
  2. To lay hold of with the mind; to become thoroughly acquainted or conversant with; to comprehend.
  Grasp, v. i. To effect a grasp; to make the motion of grasping; to clutch; to struggle; to strive.
     As one that grasped And tugged for life and was by strength subdued.   --Shak.
  To grasp at, to catch at; to try to seize; as, Alexander grasped at universal empire,
  Grasp, n.
  1. A gripe or seizure of the hand; a seizure by embrace, or infolding in the arms. “The grasps of love.”
  2. Reach of the arms; hence, the power of seizing and holding; as, it was beyond his grasp.
  3. Forcible possession; hold.
     The whole space that's in the tyrant's grasp.   --Shak.
  4. Wide-reaching power of intellect to comprehend subjects and hold them under survey.
     The foremost minds of the next . . . era were not, in power of grasp, equal to their predecessors.   --Z. Taylor.
  5. The handle of a sword or of an oar.
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  grasp
       n 1: understanding of the nature or meaning or quality or
            magnitude of something; "he has a good grasp of
            accounting practices" [syn: appreciation, hold]
       2: the limit of capability; "within the compass of education"
          [syn: compass, range, reach]
       3: a firm controlling influence; "they kept a firm grip on the
          two top priorities"; "he was in the grip of a powerful
          emotion"; "a terrible power had her in its grasp" [syn: grip]
       4: the act of grasping; "he released his clasp on my arm"; "he
          has a strong grip for an old man"; "she kept a firm hold
          on the railing" [syn: clasp, clench, clutch, clutches,
           grip, hold]
       v 1: hold firmly [syn: hold on]
       2: get the meaning of something; "Do you comprehend the meaning
          of this letter?" [syn: get the picture, comprehend, savvy,
           dig, compass, apprehend]