The only way a malfunction occurs as the result of a look-ahead operation is if the predicted results weren't available, such as when the next call is routed to another system.
预先操作失误的惟一情况就是所预测的结果不可用，例如下一个调用被路由到其他系统上去了。
While the original aim was to raise the hull if at all feasible, the operation was not given the go-ahead until January 1982, when all the necessary information was available.
虽然最初的目标是在可行的情况下提高船体，但是直到1982年1月所有必要信息都具备时，这项行动才得到批准。
Most important, an updated operation plan being set to satisfy the current market, and the consequences of taking various actions are known ahead of time, minimizing cost and disruptive surprises.
最重要的是，必须事先修订运营计划以满足当前的市场需求以及了解各种措施所产生后果，这样就可以最大限度地减少成本和破坏性的意外事件。
However,he says the repatriation operation cannot go ahead until the Mauritanian and Malian governments agree on how the returns will be carried out.
VOA: standard.2009.10.24
"What we need is a multi-pronged, explicit strategy that employs all of the elements of our national power and our allies, and that ties together multiple lines of operation, including direct diplomacy with the Iranians, into a coherent plan of action for the months ahead that has goals and schedules and teeth,"
VOA: standard.2009.04.28
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