Do not open the protection ( gates ) door of machine without permission. Do not change ordelete the system documents of the machine.

未经允许不得打开机床电器防护门，勿要对机内系统文件进行更改或删除。 综。

youdao

Do not open the lift door without permission lest lead to injury accident.

不要惊慌失措，稳定情绪；严禁私自打开轿箱，避免造成伤害事故。

youdao

Panorama has learned that over the last decade there have been almost 14, 000 cases of prisoners leaving open jails without permission.

BBC: 'Risk' from open prison criminals

At the moment anyone can open up an estate agency without any qualifications or permission from any official body.

BBC: Estate agents 'need regulating'

Government officials say this will mean free schools - and any other state-funded school - can open "in almost any building for a year without needing planning permission".

BBC: Education & Family