"That means protecting the rights of Egypt's citizens, lifting the emergency law, revising the constitution and other laws to make this change irreversible and laying out a clear path to elections that are fair and free.

VOA: special.2011.02.12

And for the spontaneous change which happens irreversibly That means that'll be dq irreversible.

对于不可逆的自发过程,这说明dq是不可逆的,当过程是可逆时。

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