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:
curr = buckets[i];
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"items": ["annual_subscription"],，详情可参考Line官方版本下载
习近平总书记叮嘱：“任何时候我们都不能走那种急就章、竭泽而渔、唯GDP的道路。这就是为什么要树牢新发展理念。”，推荐阅读同城约会获取更多信息
However, the Macher house murders at the start of 7 aren't simply fan-service. They are also a declaration: Don't get stuck in the past.