如何在R中下载jpeg文件跳过循环中的元素

install.packages("jpeg")

library(jpeg)

urls <- c("url1.jpg", "url2.jpg", "url3.jpg", "url4.jpg")

for (url in urls) {
  tryCatch({
    download.file(url, destfile = basename(url))
    cat("Downloaded", basename(url), "\n")
  }, error = function(e) {
    cat("Failed to download", basename(url), "\n")
  })
}