Pulling out the alarm switch activates alarm and pushing it deactivates it.闹钟的开和关是通过拔出和按入闹铃开关实现的.The HOLD switch deactivates the buttons on the cassette holder.HOLD开关可使卡带架上的钮键失效.Actuates an alarm when flow is inadequate,...

deactivates的音标：...

v.解除动员( deactivate的第三人称单数 )，使无效，复员，使不活动...