求翻译：分散投资引入了对风险和收益对等原则的一个重要的改变，分散投资相对单一证券投资的一个重要的好处就是，分散投资可以在不降低收益的同时降低风险。这也意味着通过分散投资我们可以改善风险—收益比率。是什么意思？

Diversification of risks and benefits of introducing the principle of reciprocity is an important change in a single diversified investment portfolio relative to an important benefit is that diversification can not reduce the benefits of reduced risk. This also means that we can improve through dive

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The disperser investment has introduced to the risk and an income coordinated principle important change, a disperser investment relatively sole negotiable securities investment important advantage is, the disperser investment may while not reduce the income to reduce the risk.This also meant invest

Diversified portfolio introduces an important change of the risks and benefits of the principle of reciprocity, diversify single an important benefit is that of securities investment, diversification could be made without reducing income while reducing risk. This also means that through a diversifie

Have dispersed and invested and introduced an important change of risk and income reciprocity principle, dispersing an important advantage of investing relatively single bond investment is, may disperse the investment reducing risk while not reducing the income. This means too we can improve the ris