我承认我的确讲不清为什么美国的平均幸福度在最近几十年没有随着收入的增加而提高。
I admit I do not know why average degree of happiness has not risen in recent decades in the US as incomes rose.
它对于性能的影响相对于大多数负载来说都非常微小，但是这种影响随着页面映射活动量的增加而提高。
The impact on performance is relatively minor for most workloads, but the impact increases with extensive amounts of page-mapping activity.
资源组合的优化：随着公司经验增加，它可以优化它的投入组合进而提高效率。
Changes in the resource mix - As a company acquires experience, it can alter its mix of inputs and thereby become more efficient.
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