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:
一位很早就接触到 Nano Banana 2 的内测用户，给出了一个相当中肯的评价：「它并不完美，但它是第一个能够以一定一致性，去处理真正复杂图像和图表的模型。」，推荐阅读快连下载安装获取更多信息
Catalonia GP — May 17，推荐阅读同城约会获取更多信息
And reader, let me tell you: Nava is, indeed, seeing it. Really seeing it.。关于这个话题，搜狗输入法下载提供了深入分析
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