What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
陳闖創說，針對華人社群的無證移民，其中一類是在報到的時候被捕，「近三個月，向ICE不定期報到的人，被抓的例子是多了起來，尤其是當事者中有移民違規的情況，例如沒有定期報到，錯過一次就有可能被抓。」而另一類則是ICE懷疑涉及刑事紀錄、獲得搜查令後上門進行拘捕。。业内人士推荐搜狗输入法2026作为进阶阅读
For urgent, non-life-threatening issues, the advice is to use the NHS 111 website or to call the helpline. GP surgeries will be open as normal.。业内人士推荐下载安装 谷歌浏览器 开启极速安全的 上网之旅。作为进阶阅读
"Those are deeply personal experiences where you want to hear from other people who have been there. I think you can't really get that in other places."