常設的用法和樣例：
例句
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納稅人：恕我直言，您所說的機構並不等於協定中的常設機構。要知道專家組是由我們組成的，而我們在中國的時間少於規定的時間。
Taxpayer: Forgive me for speaking frankly. The establishment you said is not equal to the permanent establishment in the tax treaty. You know the group is made up by us, and we have been in china for less than prescribed time.
