pro·pel /prəˈpɛl/
 (vt.)推進,驅使


 Pro·pel v. t. [imp. & p. p. Propelled p. pr. & vb. n. Propelling.]  To drive forward; to urge or press onward by force; to move, or cause to move; as, the wind or steam propels ships; balls are propelled by gunpowder.

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 propel
      v 1: cause to move forward with force; "Steam propels this ship"
           [syn: impel]
      2: give an incentive for action; "This moved me to sacrifice my
         career" [syn: motivate, actuate, move, prompt, incite]
      [also: propelling, propelled]