con·struc·tive /kənˈstrʌktɪv/
 (a.)建設性的,構造上的,作圖的


 Con·struct·ive a.
 1. Having ability to construct or form; employed in construction; as, to exhibit constructive power.
    The constructive fingers of Watts.   --Emerson.
 2. Derived from, or depending on, construction, inference, or interpretation; not directly expressed, but inferred.
 Constructive crimes Law, acts having effects analogous to those of some statutory or common law crimes; as, constructive treason. Constructive crimes are no longer recognized by the courts.
 Constructive notice, notice imputed by construction of law.
 Constructive trust, a trust which may be assumed to exist, though no actual mention of it be made.

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 constructive
      adj 1: constructing or tending to construct or improve or promote
             development; "constructive criticism"; "a constructive
             attitude"; "a constructive philosophy"; "constructive
             permission" [ant: destructive]
      2: emphasizing what is laudable or hopeful or to the good;
         "constructive criticism"