Watermarking
(watermark 的現在分詞) n. 水位標志, 水印\\nvt. 印水印于
??? 情景例句
I don't.
我沒打。
Absolutely impossible!
絕對不可能!
By then, however, in many places the grass had already taken root.
然而到那時，很多地方的草已經生了根。