You can use it mainly to analyze the following two kinds of problems: throughput lower than target or gradual throughput degradation.

您可以使用它来分析下面的两类问题：吞吐量低于目标情况，或者吞吐量逐渐降低。

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The decline was mainly due to lower food and energy costs, which have fallen compared with a year ago.

这主要是由于食品及能源价格与去年同期相比有所下降。

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Consumer prices fell a worse-than-expected 1.5% in April, mainly on lower food prices, and producer prices slid 6.6%, compared with the consensus forecast of 6.3%.

四月份消费者价格下跌1.5%，比预期的要糟，主要源自较低的食品价格。同时生产者价格下滑6.6%，与此前6.3%的预测较为吻合。

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And overall efficiency is lower, mainly because of a less skilled workforce.

ECONOMIST: Living standards

The U.S. dollar index was solidly lower Tuesday and mainly lost ground to a stronger Euro currency.

FORBES: P.M. Kitco Metals Roundup: Gold Ends Higher on Short Covering, Bargain Hunting; Weaker U.S. Dollar Supportive, Too

Overall, the 2012 second quarter's results for Clydesdale Bank were weakened by lower revenue, mainly from increased funding costs.

BBC: David Thorburn