the·o·ret·i·cal /ˌθiəˈrɛtɪkəl, ˌθɪ(ə)rˈɛ-/
  (a.)理論的
  the·o·ret·i·cal /ˌθɪəˈrɛtɪkəl, ˌθɪ(ə)rˈɛt/ 形容詞
  理論的,假設的,推理的
  theoretical
  理論的
  theoretical
  理論
  The·o·ret·ic The·o·ret·ic·al a.  Pertaining to theory; depending on, or confined to, theory or speculation; speculative; terminating in theory or speculation: not practical; as, theoretical learning; theoretic sciences. -- The*o*ret*ic*al*ly, adv.
  ◄ ►
  theoretical
       adj 1: concerned primarily with theories or hypotheses rather than
              practical considerations; "theoretical science" [syn:
              theoretic] [ant: empirical]
       2: concerned with theories rather than their practical
          applications; "theoretical physics" [ant: applied]
       3: based on specialized theory; "a theoretical analysis" [syn:
          abstract]