The common approach of marking the approximately duplicate records is that a pair of records are compared in a window with fixed length after these records are indexed by a certain keyword.
要把数据表中的相似重复记录标识出来，常用的方法是先将所有记录按照某个关键字进行索引，然后在一个固定长度的窗口范围内进行记录的两两比对。
Duplicate these four frames and in layer window hide the closed eye layer and unhide the open eye layer.
复制这四个帧，隐藏闭着的眼睛层，显示睁着的眼睛层。
Duplicate these four frames and in layer window hide the closed eye layer and unhide the open eye layer.
复制这四个帧，隐藏闭着的眼睛层，显示睁着的眼睛层。
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