但如果你使用磁盘作为单一分区，然后对RAID配置的经典规则完全适用。

But if you're using whole disks as single partitions, then the classic rules for RAID configurations fully apply.

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在加入欧洲单一货币，即欧元时新旧成员国所适用的不同规则或许是一个最耐人寻味的例子。

Perhaps the most telling case of one rule for new members and another for old ones has come with the single currency, the euro.

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