soundness
  完全堅固,穩固,公正
  Sound·ness, n. The quality or state of being sound; as, the soundness of timber, of fruit, of the teeth, etc.; the soundness of reasoning or argument; soundness of faith.
  Syn: -- Firmness; strength; solidity; healthiness; truth; rectitude.
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  soundness
       n 1: a state or condition free from damage or decay [ant: unsoundness]
       2: the quality of being prudent and sensible [syn: wisdom, wiseness]
       3: the firmness and tone of healthy tissue; "his muscle
          firmness" [syn: firmness]