malfunction

1. V-I If a machine or part of the body malfunctions, it fails to work properly. 出故障[正式]

The radiation can damage microprocessors and computer memories, causing them to malfunction. 該輻射會破壞微処理器和計算機存儲器，使之出故障。

2. N-COUNT Malfunction is also a noun. 出故障

There must have been a computer malfunction. 肯定出了電腦故障。