激励薪酬往往不能产生效果的最大原因似乎是，管理者并不会坚持这个计划。
The biggest reason incentive pay so often doesn't deliver results, it seems, is that individual managers don't stick with the program.
对投资者而言，美国在线和时代华纳合并不能产生效果……就如同西西佛斯推石上山一样劳而无功。
To make the merger (AOL and Time Warner) work for investors... will be like pushing a boulder up an Alp.
研究视觉设计的基本要素，了解这些要素是如何产生效果的，将有助于新手摄影师提高他们的构图能力。但是仅仅遵循这些规则并不能保证他们能成功。
Studying the basic elements of visual design and understanding how they work will help new photographers improve their composition, but simply following rules does not guarantee success.
他们说，有可能研究出一种能保护胎儿脑部发育的药品，即便是那些不能戒酒的孕妇也能产生效果。
It is possible, they say, that a medication can be created to protect the brains of developing fetuses, even if pregnant women cannot quit drinking.
这也得至少5年才能产生效果，所以我们不能再等了。
It could take at least five years to generate savings, so we have no time to lose.
这也得至少5年才能产生效果，所以我们不能再等了。
It could take at least five years to generate savings, so we have no time to lose.
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