详细解释:【法】 规定期间, 法定期间
例句：
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.纳税人：恕我直言，您所说的机构并不等于协定中的常设机构。要知道专家组是由我们组成的，而我们在中国的时间少于规定的时间。