Another temporary discount may not be what you want, but at least it is a bird in the hand.

再一次临时打折可能达不到你所希望的，但至少这是已经到手的东西。

《柯林斯英汉双解大词典》

Therefore, a system tuned by even the most skilled administrator at one point in time may not be optimal at another time.

因此，即使是技术最高超的管理员在某个时候调优过的系统，在另一个时候也未必是最优的。

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In a practical sense, your business may employ one of many supply chains across your many different lines of business; outsourcing may be appropriate in one area, but not in another.

从实践的角度看，您的业务可能使用许多供应链中的一种，外包也许在某个领域中是合适的，但可能在其他领域中并不尽然。

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Organizers chose not to wait for the 25th milestone because many survivors and vets may not be alive in another five or 10 years.

NPR: Holocaust Survivors, Veterans Gather At DC Museum

What is more, a refugee in one country may not be a refugee in another.

ECONOMIST: Refugees

The great shame is that while both are virtually certain to start Sunday's meeting, they may not be in direct opposition to one another at Celtic Park.

BBC: Brown & Diouf re-match adds spice to Old Firm derby