sed·en·tary /ˈsɛdṇˌtɛri/
  (a.)久坐的,坐慣的,土生的慣于久坐的人
  sed·en·tary /ˈsɛdṇˌtɛrɪ/ 形容詞
  坐式的
  Sed·en·ta·ry a.
  1. Accustomed to sit much or long; as, a sedentary man. “Sedentary, scholastic sophists.”
  2. Characterized by, or requiring, much sitting; as, a sedentary employment; a sedentary life.
     Any education that confined itself to sedentary pursuits was essentially imperfect.   --Beaconsfield.
  3. Inactive; motionless; sluggish; hence, calm; tranquil. [R.] “The sedentary earth.”
     The soul, considered abstractly from its passions, is of a remiss, sedentary nature.   --Spectator.
  4. Caused by long sitting. [Obs.] “Sedentary numbness.”
  5. Zool. Remaining in one place, especially when firmly attached to some object; as, the oyster is a sedentary mollusk; the barnacles are sedentary crustaceans.
  Sedentary spider Zool., one of a tribe of spiders which rest motionless until their prey is caught in their web.
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  sedentary
       adj : used of persons or actions; "forced by illness to lead a
             sedentary life"