资料来源 : pyDict

早熟的,象大人的,早成的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Precocious \Pre*co"cious\, a. [L. praecox, -ocis, and
   praecoquus, fr. praecoquere to cook or ripen beforehand; prae
   before + coquere to cook. See 3d {Cook}, and cf. {Apricot}.]
   1. Ripe or mature before the proper or natural time; early or
      prematurely ripe or developed; as, precocious trees. [R.]
      --Sir T. Browne.

   2. Developed more than is natural or usual at a given age;
      exceeding what is to be expected of one's years; too
      forward; -- used especially of mental forwardness; as, a
      precocious child; precocious talents.

资料来源 : WordNet®

precocious
     adj 1: characterized by or characteristic of exceptionally early
            development or maturity (especially in mental
            aptitude); "a precocious child"; "a precocious
            achievement" [ant: {retarded}]
     2: appearing or developing early; "precocious flowers appear
        before the leaves as in some species of magnolias"