el·e·men·ta·ry /ˌɛləˈmɛntəri, ˈmɛntri/
  (a.)初等的,初步的;自然力的,元素的
  elementary
  初等; 基本
  elementary
  基本
  El·e·men·ta·ry a.
  1. Having only one principle or constituent part; consisting of a single element; simple; uncompounded; as, an elementary substance.
  2. Pertaining to, or treating of, the elements, rudiments, or first principles of anything; initial; rudimental; introductory; as, an elementary treatise.
  3. Pertaining to one of the four elements, air, water, earth, fire. “Some luminous and fiery impressions in the elementary region.”
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  elementary
       adj 1: easy and not involved or complicated; "an elementary problem
              in statistics"; "elementary, my dear Watson"; "a
              simple game"; "found an uncomplicated solution to the
              problem" [syn: simple, uncomplicated, unproblematic]
       2: of or being the essential or basic part; "an elementary need
          for love and nurturing" [syn: primary]