prescriptive period

例句：

1. 1. The company has a prescriptive period of three years for new hires.
   该公司对新员工的试用期为三年。
2. 2.During the prescriptive period, employees are not allowed to work outside their assigned tasks.
   在规定期内，员工不得从事与分配任务无关的工作。
3. 3. The government has set a prescriptive period for the reduction of carbon emissions.
   政府已经设定了一个规定期，以减少碳排放。