[ 复数 watermarks 第三人称单数 watermarks 现在分词 watermarking 过去式 watermarked 过去分词 watermarked ]
同义词: water line
以上来源于: WordNet
N-COUNT A watermark is a design that is put into paper when it is made, and that you can only see if you hold the paper up to the light. Paper money often has a watermark, to make it harder to copy illegally. 水印; 常用于钞票上以防伪 → see also high-water mark
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