如果私人计划要求供应商保持同等的生产力节省费用，并且拒绝让供应商将额外的成本转嫁给他们，那么节省的成本可能会高得多。
If private plans demanded similar productivity savings from providers, and refused to let providers shift additional costs to them, the savings could be much larger.
那些保持住地位的很可能是偶然的，而那些一直在底位的往往被高昂的费用困在那里。
The ones that stay in place are probably by chance, and the ones that stay in the bottom are often trapped there by high fees.
当我们旅行的时候，为了保持低费用，我们不得不频繁地住在很挤的住所里。
And when traveling, to keep expenses low, we frequently had to stay in close quarters.
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