ba·sis /ˈbesəs/
  基礎,主要成分
  ba·sis /ˈbesəs/ 名詞
  (複bases)基底,底,主藥
  basis
  基線
  basis
  基礎 基底
  Ba·sis n.; pl. Bases
  1. The foundation of anything; that on which a thing rests.
  2. The pedestal of a column, pillar, or statue. [Obs.]
     If no basis bear my rising name.   --Pope.
  3. The groundwork; the first or fundamental principle; that which supports.
     The basis of public credit is good faith.   --A. Hamilton.
  4. The principal component part of a thing.
  ◄ ►
  basis
       n 1: a relation that provides the foundation for something; "they
            were on a friendly footing"; "he worked on an interim
            basis" [syn: footing, ground]
       2: the fundamental assumptions from which something is begun or
          developed or calculated or explained; "the whole argument
          rested on a basis of conjecture" [syn: base, foundation,
           fundament, groundwork, cornerstone]
       3: the most important or necessary part of something; "the
          basis of this drink is orange juice" [syn: base]