Digit alignment — pairing corresponding digits from two numbers
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.”
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此前，iPhone 拍照以太直白、太平淡，没什么个性也没什么风格闻名，并由此得到个很贴切的外号——白开水。
Even the reveal of two tropical-styled versions of Pikachu — one rocking sunglasses, a floral shirt, and a sunhat, the other sporting a cap and dress — struggled to compete with the starter frenzy. Normally, special Pikachu forms would dominate the discourse. This time? Supporting cast.
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В районе города-героя Новороссийска в ночь на 28 февраля произошло землетрясение магнитудой 3,5 по шкале Рихтера. Об этом сообщили в Telegram-канале Оперативного штаба Краснодарского края.，这一点在搜狗输入法下载中也有详细论述