失灵shīlíng(机器、仪器、某些器官等)变得不灵敏或失去应有的功能{(of machines, instruments, some organs, etc.) not work properly; be ineffective; be out of order; become insensitive or lose the proper functions}: 发动机～{The motor is out of order.}|听觉～{lose one's sense of hearing}◇指挥～。{ineffective command}