However good the database system is, if there is no provision for separating old and inactive data from current, active application data, application performance will eventually deteriorate.
尽管数据库系统这么好，但是如果不把非活动的旧数据与活动的当前应用程序数据隔离开，应用程序的性能最终会恶化。
Clients became convinced that no one firm could produce good performance in every asset class, nor could they master the art of timing the switch from one asset to another.
投资者们也逐渐意识到没有一家公司可以在每个资产级别上都有好的收益，而且它们也并不能把握好从一种资产转到另一种资产的时机。
With his standard of English in the English Speech Competition colonel, he will have a good performance, and we no doubt about it.
凭他的英语水平，在这次校级英语演讲比赛中他将有上佳的表现，对此我们没有疑问。
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