...都软弱[1]，士大夫们不得不反思自己的前途和人生价值，且大幅降低了压缩率[2]；块置乱(Block Shuffling)和块旋转(Block Rotation)[4]同样对明、密文攻击软弱。
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然后将这些块旋转180度角，并以适当的转换位置作为文件名保存它们。
These tiles are then rotated 180 degrees and saved with the filename of its appropriately translated position.
实际的磁臂必须找到正确的柱面，控制部分需要访问正确的块，并且磁头必须等到这些块旋转到磁头下面。
The actual disk arms must find the correct cylinder, the control needs to access the correct blocks, and the disk heads have to wait while the blocks rotate to them.
可以考虑将时间的毫秒数从200增加到400，以在旋转过程开始前给系统更多的时间来保存图像块。
Consider increasing the millisecond multiplier from 200 to 400 to give your system more time to save the image tiles before the rotate process begins.
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