资料来源 : pyDict

拔开塞子,打开…的口,除去障碍

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Unstop \Un*stop"\, v. t. [1st pref. un- + stop.]
   1. To take the stopple or stopper from; as, to unstop a
      bottle or a cask.

   2. To free from any obstruction; to open.