coun·ter·bal·ance /ˈkaʊntɚ/
 (vt.)使平均,使平衡,使彌補平衡量,平衡力,勢均力敵
 Coun·ter·bal·ance v. t. [imp. & p. p. Counterbalanced p. pr. & vb. n. Counterbalancing.] To oppose with an equal weight or power; to counteract the power or effect of; to countervail; to equiponderate; to balance.
    The remaining air was not able to counterbalance the mercurial cylinder.   --Boyle.
    The study of mind is necessary to counterbalance and correct the influence of the study of nature.   --Sir W. Hamilton.
 Coun·ter·bal·ance n. A weight, power, or agency, acting against or balancing another; as: (a) A mass of metal in one side of a driving wheel or fly wheel, to balance the weight of a crank pin, etc., on the opposite side of the wheel. (b) A counterpoise to balance the weight of anything, as of a drawbridge or a scale beam.
    Money is the counterbalance to all other things purchasable by it.   --Locke.
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 counterbalance
      n 1: an equivalent counterbalancing weight [syn: counterweight,
            counterpoise, balance, equalizer, equaliser]
      2: equality of distribution [syn: balance, equilibrium, equipoise]
      3: a compensating equivalent [syn: offset]
      v 1: adjust or make up for; "engineers will work to correct the
           effects or air resistance" [syn: compensate, correct,
            even out, even off, even up]
      2: oppose with equal weight or force [syn: oppose]
      3: oppose and mitigate the effects of by contrary actions;
         "This will counteract the foolish actions of my
         colleagues" [syn: counteract, countervail, neutralize]