Each loan is asked to return two values: risk level and amount of the loan.
要求每份贷款返回两个值：风险级别和贷款额。
For any given level of return, you can reduce the risk; for any given level of risk, you can increase the return; sounds pretty good.
给定回报率，可以降低风险，给定风险水平，可以提高回报率，听上去不错。
The level of risk that an organization bears relates to the level of return it desires.
一个组织承受的风险水平与它期望的回报相关。
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