power down
phrasal verbpower down | power something down
(also power off, power something off)
to stop a machine, especially a computer, by turning off the electricity supply 使(机器)停止工作;关机(尤指计算机);关闭电源 We were told to power down at 9.45. 我们收到通知,9:45 要关闭电源。 Log off or power down your system. 注销或关闭系统。 Do not power off or reboot in the middle of the update. 更新过程中不要关闭电源或重新启动。 Power off your PC. 关闭电脑。