aptness
  適合性,傾向,才能
  Apt·ness, n.
  1. Fitness; suitableness; appropriateness; as, the aptness of things to their end.
     The aptness of his quotations.   --J. R. Green.
  2. Disposition of the mind; propensity; as, the aptness of men to follow example.
  3. Quickness of apprehension; readiness in learning; docility; as, an aptness to learn is more observable in some children than in others.
  4. Proneness; tendency; as, the aptness of iron to rust.
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  aptness
       n 1: a disposition to behave in a certain way; "the aptness of
            iron to rust"; "the propensity of disease to spread"
            [syn: propensity]
       2: appropriateness; "the phrase had considerable aptness" [syn:
           appositeness] [ant: inaptness, inaptness]