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:
welcome to join — every contribution matters.。关于这个话题，safew官方版本下载提供了深入分析
Get your benchmark。关于这个话题，爱思助手下载最新版本提供了深入分析
GPT-5.2＆Claude Sonnet 4＆Gemini 3 Flashは戦争ゲームをプレイすると一切降伏せず95％のケースで核兵器を使用
"With a test like this, success comes from what we learn, and today's flight will help us improve Starship's reliability."