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我正在尝试测试此代码:

library(XML)
library(RCurl)

url <- "http://en.wikipedia.org/wiki/List_of_countries_by_population"
urldata <- getURL(url)

当我按下回车键时,R 返回:

Failed to connect to en.wikipedia.org port 80: Timed out

我该如何解决这个问题?

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