该文给出了一种修正的欠帐轮询调度算法，该算法适合用于排队队列比较少且排队报文长度信息不明确的情况；
This article puts forward a new scheduling algorithm named MDRR. This algorithm may be used when the packet length is not easy to get.
在两种情况下，事务的结果在回滚事务之前都是不明确的，但是这种不明确性的持续时间在一种情况下为数毫秒，在另一种情况下可能长达数分钟。
In both cases, the outcome of the transaction is ambiguous until the transaction is rolled back, but the duration of the ambiguity is milliseconds in one case and possibly many minutes in the other.
在美国需求疲软的情况下希腊的后备计划是什么还不明确。
It is not yet clear what Greece's fallback plan will be if American demand is weak.
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