knock on wood
敲木頭
口語·祈求好運
英文釋義
To hope that something will not happen or to bring good luck by touching or knocking on something wooden
例句
I haven't been sick all year, knock on wood.
典故來源
源于古代異教信仰，認為樹木有神靈，敲擊木頭可驅邪或避免厄運。