private classroom

例句：

1. 1.This private club is only for members.
   这个私人俱乐部只对会员开放。
2. 2. He has a private office in the building.
   他在大楼里有一间私人办公室。
3. 3. The company's policy is to keep all information private.
   公司的政策是将所有信息保密。