基于这种情况，给出了分块PCA方法。
基于这种情况，这时的界面应该采用独占姿态，完全占据屏幕空间。
Interfaces, in this regard, should resemble sovereign posture applications, taking the full-screen real estate.
当前文件在上次保存后可能被另一个用户更改过。基于这种情况，您希望如何处理？
The current file may have been changed by another user since you last saved it. In that case, what do you want to do?
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