Second part, we designed the method of measuring investment return and risk on the basis of definitude of the essence of security investment return and risk.

第二部分，在明确了证券投资收益和风险本质的基础上，设计了证券投资收益和风险的计量方法。

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Compare it to thinking that Social Security provides a decent investment return.

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Their drive for success will produce the return on investment, the job security and the product benefits that are the shared interests of all interested parties.

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Similarly, in Galveston, Texas, where local government workers in three counties opted for a personal savings and investment alternative to Social Security in 1981 as well, the annual rate of return fell by about half at the lowest point of the financial crisis.

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