You will understand the ways in which the software will get from any state to another state, and (very importantly) if you can define every operation, then you can track and undo it as well.

您将会理解软件从一个状态转到另一个状态的方式，而且（非常重要），如果您可以定义某个操作， 那么同样可以追踪并撤销它。

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If something performs a single activity, then it really refers to a service operation.

如果执行单一活动，那么它实际上是指服务操作。

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If an operation is declared as abstract then the inheriting class must provide a concrete implementation.

如果某项操作被宣布为抽象的那么继承的类必须提供了一个具体的实施方案。

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If that fades, then the whole operation could collapse in frustration and disillusionment.

ECONOMIST: The new Democratic establishment

If the Mossad did in fact kill Mabhouh, then the operation was an instance in which Israel distinguished itself from its European detractors by acting, rather than preening.

CENTERFORSECURITYPOLICY: When rhetoric rules the roost

However, if the cancer has spread into the bladder muscle, then a bigger operation may be needed.

BBC: Bladder cancer