...择媒体的公式：(注37) 报酬的承诺(Promise of Reward) = 选择或然率(Probability of Selection) 所需付出的努力(Effort Required) 报酬的重点在于阅听人对自己需要的满足。因此当一种特定的媒体能满足我 们某部份特定的需求时，我们便会加以注意。
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这种评估对估计整合数据所需付出的努力程度很关键。
This evaluation is critical to determine the level of effort needed to integrate this data.
第二条是“收益递减法则”，根据该法则，工作完成得越接近完美，为完成剩余工作所需付出的努力就越大。
The second is the law of diminishing returns, which suggests that, as you near 100 per cent, you expend proportionally more effort on the remaining work.
我们相信为完成这项任务所需要投入的时间和付出的努力是值得的。
We believe the time and hard work involved in completing such an assignment are worthwhile.
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