The final catch is whether the risk-return trade-off will be as good in practice as it is in theory.
最后的问题是，在实践中，风险和收益的平衡是否真的和理论上一样美好？
2
My results might thus help to reconcile mean-variance approaches to risk-return analysis with other, ex-ante, approaches.
因此，我的结论可以同以前的办法一起帮助均值方差方法与风险-收益分析相一致。
3
They need to be taken into account in the firm's risk-return analysis and hence some countries' risks requiring higher returns to justify the higher risks.