Try this: Take a photo and upload it to Facebook, then after a day or so, note what the URL link to the picture is and then delete it.
出自-2010年12月聽力原文
In the case of Facebook, the company says data may hang around until the URL in question is reused, which is usually "after a short period of time", though obviously that time can vary considerably
出自-2010年12月聽力原文
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
N-COUNT
統(tǒng)一資源定位器；網(wǎng)頁地址；網(wǎng)址
A URL is an address that shows where a particular page can be found on the World Wide Web. URL is an abbreviation for (縮略=) 'Uniform Resource Locator'.