optional compulsory jurisdiction

例句：

1. 1.The teacher gave us the option to choose our own textbooks.
   老师给了我们选择教科书的选择权。
2. 2. The restaurant offers a variety of dishes, some of which are optional.
   这家餐厅提供多种菜肴，其中一些是可选的。
3. 3. In this course, we have the flexibility to choose our own study materials.
   在这个课程中，我们有自由选择学习材料的自由。