Some students say such policies take away their independence and cut off their main method of communication with family and friends.

一些学生表示，这样的政策剥夺了他们的独立性，并切断了他们与家人和朋友交流的主要方式。

There have been famous patents for a method for cutting a sandwich or a - the method for swinging on a swing set.

切割三明治的方法或在秋千上荡秋千的方法已经获得了著名的专利。