n.(紙張上的)水印圖案；水位標記
v.壓制水印
The digital watermark is to prevent pirating. 數(shù)碼水印圖案是用來防止盜版的。
The watermark on the banknote is to prevent forgery. 鈔票上的浮水印是用來防止偽造的。
Documents with this kind of watermark are difficult to duplicate. 帶有這種水印的文件很難被復制。
