The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
Жители Санкт-Петербурга устроили «крысогон»17:52，更多细节参见im钱包官方下载
。关于这个话题，夫子提供了深入分析
Will download: 17 packages (55.1 MB)，这一点在91视频中也有详细论述
# or use the vocab.txt from the HF files page