(of a person who has the necessary authority) to decide against or refuse to accept a previous decision, an order, a person, etc.

Every time I make a suggestion at work, my boss overrides me/it. 每次我对工作提出建议，我的老板都不听。

The president used his veto to override the committee's decision. 总裁利用手中的否决权推翻了委员会的决定。

to operate an automatic machine by hand

He overrode the autopilot when he realized it was malfunctioning. 他意识到自动驾驶仪出了故障，就改为手动驾驶。

to take control over something, especially in order to change the way it operates

The pills are designed to override your body's own hormones. 这些药片用以调节人体自身的荷尔蒙分泌。

to be more important than something

Parents' concern for their children's future often overrides all their other concerns. 父母对子女未来的考虑往往重于他们对其他任何事情的关心。

to travel on public transport further than your ticket allows you to

There is a $20 penalty for passengers who travel without a ticket or override. 无票旅行或超程旅行的乘客将受到20美元的处罚。

a device that changes the control of a machine or system in special situations, especially from automatic to manual

The heating system has a manual override. 这套取暖系统有一个手动超控装置。

in American politics, an occasion when an elected group of people refuses to accept a decision made by an elected leader

The vote fell short of the majority needed for an override of the Governor's veto. 投票未过半数，未能推翻州长的否决。