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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。关于这个话题，heLLoword翻译官方下载提供了深入分析
（四）发现违反治安管理行为人有其他违法行为的，在对违反治安管理行为作出处罚决定的同时，通知或者移送有关主管机关处理。，这一点在搜狗输入法2026中也有详细论述
const res = new Array(len); // 结果数组：存储每个元素的下一个更大值