增量备份非常合理，因为它们减少了还原数据库服务器所需的时间。
Incremental backups are reasonable because they reduce the time needed to restore the database server.
如果他们不能平衡贸易差额或者以合理的利率借钱的话，他们就负担不起本国公民所需的全部商品。
If they cannot balance their trade or borrow money at a reasonable rate, they will be unable to afford all the goods their citizens want.
评估使您有机会了解您所拥有的和您需要做的，以准确的计划您的迁移进而使所需的资源能够合理的使用。
Assessment gives you the opportunity to understand what you have and what you need to do, and to accurately plan your migration so you can put the required resources into place.
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