Definition
A phrase used to express the desire to avoid bad luck, typically when referring to past good fortune or expressing hopes for the future.
祷告上天（以避免呆运）
I did well on this exam, knock on wood, and I hope the next one goes as smoothly.
我这次考试考得不错，敲敲木头，希望下次也能这么顺利。
We haven't had any problems this year so far, knock on wood, and hopefully everything will stay smooth.
我们今年到目前为止还没遇到任何问题，敲敲木头，希望一切都能保持顺利。
I think we'll finish this project on time, knock on wood.
我觉得我们能准时完成这个项目，敲敲木头。