Что думаешь? Оцени!
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:
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For multiple readers
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Set egress mode
Why you can trust ZDNET。safew官方版本下载对此有专业解读