parol

例句：

1. 1. He was given a parol to go home early.
   他被允许提前回家。
2. 2. The parol is valid for one year only.
   这个许可证有效期只有一年。
3. 3. Without the parol, they were not allowed to enter the building.
   没有许可证，他们不允许进入大楼。