com·mute /kəˈmjut/
 (vt.)交換,改換支付方法,減輕(vi.)補償,經常來往
 commute
 交換
 Com·mute v. t. [imp. & p. p. Commuted; p. pr. & vb. n. Commuting.]
 1. To exchange; to put or substitute something else in place of, as a smaller penalty, obligation, or payment, for a greater, or a single thing for an aggregate; hence, to lessen; to diminish; as, to commute a sentence of death to one of imprisonment for life; to commute tithes; to commute charges for fares.
    The sounds water and fire, being once annexed to those two elements, it was certainly more natural to call beings participating of the first =\“watery”, and the last “fiery”, than to commute the terms, and call them by the reverse.\=   --J. Harris
    The utmost that could be obtained was that her sentence should be commuted from burning to beheading.   --Macaulay.
 Com·mute, v. i.
 1. To obtain or bargain for exemption or substitution; to effect a commutation.
    He . . . thinks it unlawful to commute, and that he is bound to pay his vow in kind.   --Jer. Taylor.
 2. To pay, or arrange to pay, in gross instead of part by part; as, to commute for a year's travel over a route.
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 commute
      v 1: transpose and remain equal in value; "These operators
           commute with each other" [syn: transpose]
      2: travel back and forth regularly, as between one's place of
         work and home [syn: travel back and forth]
      3: change the order or arrangement of; "Dyslexics often
         transpose letters in a word" [syn: permute, transpose]
      4: exchange a penalty for a less severe one [syn: convert, exchange]
      5: exchange or replace with another, usually of the same kind
         or category; "Could you convert my dollars into pounds?";
         "He changed his name"; "convert centimeters into inches";
         "convert holdings into shares" [syn: change, exchange,
          convert]