1. 准许；许可；批准
If someone who has authority over you gives you permission to do something, they say that they will allow you to do it.
e.g. He asked permission to leave the room...
他请求准许离开房间。
e.g. Finally his mother relented and gave permission for her youngest son to marry...
最后他母亲让步了,准许她的小儿子结婚。
2. 许可证；书面许可
A permission is a formal, written statement from an official group or place allowing you to do something.
e.g. ...oil exploration permissions.
石油勘探许可证