为保证水印的安全性,在嵌入之前先对水印图像作置乱处理,再将水印图像位扩展为原始图像的两倍大小。
To ensure the security of wartermark, the wartermark image was scrambled beforeembedding and then expanded to the twifold size of the original image.
我的房间是你的两倍大小。
倾倒在太平洋上垃圾的总量是德克萨斯州两倍大小,或者等于西班牙与法国面积总和。
The Pacific Ocean trash dump is twice the size of Texas, or the size of Spain combined with France.
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