over·ture /ˈovə(r)ˌʧʊr, ʧɚ/
 提議,提案,初步交涉(vt.)提議
 O·ver·ture
 1. An opening or aperture; a recess; a chamber. [Obs.] --Spenser. “The cave's inmost overture.”
 2. Disclosure; discovery; revelation. [Obs.]
 It was he
 That made the overture of thy treasons to us.   --Shak.
 3. A proposal; an offer; a proposition formally submitted for consideration, acceptance, or rejection. “The great overture of the gospel.”
 4. Mus. A composition, for a full orchestra, designed as an introduction to an oratorio, opera, or ballet, or as an independent piece; -- called in the latter case a concert overture.
 O·ver·ture, v. t. To make an overture to; as, to overture a religious body on some subject.
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 overture
      n 1: orchestral music played at the beginning of an opera or
           oratorio
      2: something that serves as a preceding event or introduces
         what follows; "training is a necessary preliminary to
         employment"; "drinks were the overture to dinner" [syn: preliminary,
          prelude]
      3: a tentative suggestion designed to elicit the reactions of
         others; "she rejected his advances" [syn: advance, approach,
          feeler]