Sometimes certain parts may suffer destruction or defeat without seriously affecting the situation as a whole, because they are not decisive for it.

有的时候，有些局部破坏了或失败了，全局可以不起重大的影响，就是因为这些局部不是对于全局有决定意义的东西。

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The point is that the most arduous retreat is by no means a decisive defeat and can even sow the seeds of historic success.

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