knock on wood
敲木头
口语·祈求好运
英文释义
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.
典故来源
源于古代异教信仰，认为树木有神灵，敲击木头可驱邪或避免厄运。