Roger evaluated the ROI on the basis of two variables namely Cost and Return.
Roger依据成本和收益这两个变量来评估roi。
The most important significant cost in all this is logistical, namely road toll fees.
在这一整套的环节中,最最重要而显著的成本就是物流费用,也就是过路通行费。
But, restricting the mechanism that they run should be identical, namely the comparison of cost and accrual.
但是,制约它们运作的机制应该是相同,也就是成本与收益的比较。
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