EVA is the synthesis index of weighing enterprise's business efficiency and capital-used efficiency.

EVA是衡量企业经营效率和资本使用效率的综合指标。

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It takes twice as much effort to breathe during sleep because of greater resistance to airflow in the airways and changes in the efficiency of the muscles used for breathing.

由于睡眠时呼吸道中的气流阻力更大，并且用于呼吸的肌肉效率有变化，所以在睡眠时呼吸需要用两倍的力气。

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The active and expiration queues are used for efficiency, load balancing, and other purposes.

使用活动和过期队列出于以下目的：效率、负载平衡和其他一些目的。

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For small businesses, gaming can be used to drive efficiency, reward employees, and even encourage healthier behavior.

FORBES: 6 Trends Reshaping Small Businesses In 2013

Rockwell Automation (ROK) manufactures tools and controls used to increase efficiency at factories.

FORBES: 5 Industrial Stocks Poised for Bigger Dividends

By the same token, a Mossad source says that cloak-and-dagger operations still have their uses, even though ultra-modern electronic and biometric skills, used with surprising efficiency (in Israeli eyes) by Dubai's police, make such operations, involving wigged disguises and old-style skulduggery, harder to pull off.

ECONOMIST: Israel's controversial intelligence service: Does Mossad really make Israel safer? | The