coun·ter·vail /ˌkaʊntɚ/
 (vt.)補償,抵銷(vi.)低銷


 Coun·ter·vail n. Power or value sufficient to obviate any effect; equal weight, strength, or value; equivalent; compensation; requital. [Obs.]
    Surely, the present pleasure of a sinful act is a poor countervail for the bitterness of the review.   --South.

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 Coun·ter·vail v. t. [imp. & p. p. Countervailed p. pr. & vb. n. Countervailing.]  To act against with equal force, power, or effect; to thwart or overcome by such action; to furnish an equivalent to or for; to counterbalance; to compensate.
    Upon balancing the account, the profit at last will hardly countervail the inconveniences that go allong with it.   --L'Estrange.


 countervail
      v 1: compensate for or counterbalance; "offset deposits and
           withdrawals" [syn: offset]
      2: oppose and mitigate the effects of by contrary actions;
         "This will counteract the foolish actions of my
         colleagues" [syn: counteract, neutralize, counterbalance]