2013年以后，秘鲁投资增速持续放缓，外国直接投资从2012年前后约120亿美元，降到2019年前后约80亿美元。国内资本同样趋于谨慎，资金宁愿停留在海外账户，也不愿投入生产。
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。关于这个话题，51吃瓜提供了深入分析
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.”
trained on a massive dataset of text. DALL-E can generate images that