它没有衡量的规模成本差异的两个环境。
It did not measure the magnitude of differences in costing for the two environments.
爱不是比较，它没有衡量。
没有确切衡量最后一次刺激计划成效的方法，因为我们不知道如果没有它的话会发生什么。
There is no way to know for sure how well the last stimulus worked because we don’t know what would have happened without it.
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