stip·u·late /ˈstɪpjəˌlet/
  (vt.)(vi.)規定,保證
  Stip·u·late a. Bot. Furnished with stipules; as, a stipulate leaf.
  Stip·u·late v. i. [imp. & p. p. Stipulated p. pr. & vb. n. Stipulating.]  To make an agreement or covenant with any person or company to do or forbear anything; to bargain; to contract; to settle terms; as, certain princes stipulated to assist each other in resisting the armies of France.
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  stipulate
       v 1: specify as a condition or requirement in a contract or
            agreement; make an express demand or provision in an
            agreement; "The will stipulates that she can live in the
            house for the rest of her life"; "The contract
            stipulates the dates of the payments" [syn: qualify, condition,
             specify]
       2: give a guarantee or promise of; "They stipulated to release
          all the prisoners"
       3: make an oral contract or agreement in the verbal form of
          question and answer that is necessary to give it legal
          force