未经委员会同意,任何部门不得擅自修改评审标准。Wèijīng wěiyuánhuì tóngyì, rènhé bùmén bù dé shànzì xiūgǎi píngshěn biāozhǔn.Without the committee's approval, no department may alter the evaluation standards without authorisation.
他未经允许擅自拿了办公室的文件。Tā wèijīng yǔnxǔ shànzì nále bàngōngshì de wénjiàn.He took the office documents without permission.
请不要擅自改动电脑里的设置。Qǐng búyào shànzì gǎidòng diànnǎo lǐ de shèzhì.Please don't change the computer settings on your own.