Metadata
Words to describe a piece of data are called “metadata.” The size, purpose, date, or author of a file that lives on your computer or your phone bill is called “metadata.”
它是用來描述你電腦上面資料的文字，包括資料的大小、用途、建立日期或是作者名，甚至你的電話帳單，都是元資料。
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