To set rate of equity returns is a critical step for long-term investment decisions, but in a realistic irrational world, its not easy to do that using CAPM familiar in standard financial theory.
确定股权回报率是进行长期投资决策的关键步骤，但在现实非理性世界中难以直接运用传统财务理论所推荐的资本资产定价模型来确定股权回报率。
Its not easy to finish the work in two days.
两天之内完成这个工作不容易。
Its not easy for you to get him to change his mind.
你要说服他改变主意是不容易的。
Its not easy for us to estimate or take into account demand, coupled with the production limitations it makes its a guestimate at times.
我们很难预估需求，加上产能的限制，有时候只能粗略估算。
Its not easy for us to estimate or take into account demand, coupled with the production limitations it makes its a guestimate at times.
我们很难预估需求，加上产能的限制，有时候只能粗略估算。
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