extendible
  可延伸 可擴充
  Ex·tend·i·ble a.
  1. Capable of being extended, susceptible of being stretched, extended, enlarged, widened, or expanded.
  2. Law Liable to be taken by a writ of extent.
  ◄ ►
  extendible
       adj : capable of being lengthened [syn: extendable]