pro·vi·so·ry /-ˈvaɪzəri, ˈvaɪzri/
  (a.)有附文的,有附帶條件的,暫時的
  Pro·vi·so·ry a.
  1. Of the nature of a proviso; containing a proviso or condition; conditional; as, a provisory clause.
  2. Making temporary provision; provisional.
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  provisory
       adj : subject to a proviso; "a provisory clause"