...981）22提出展望理論（prospect theory）指出，决策者的选择会受到讯息呈现方式的不同而有所改变，确定效果（certainty effect）說明讯息呈现的确定性而言，相对于不确定的讯息來說，个人较偏爱确定的讯息，而反射效果（reflection effect）指出，若讯息以负面...
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提出这些问题的报告可以为确定效果差或效率低的活动、以及采取适宜的改进措施提供一种手段。
Reporting of such matters an also provide a means of determining ineffective or inefficient activities, and initiating suitable improvement actions.
锻炼、饮食、认知刺激显现出了一些积极效果，尽管证据还没有足够充分到我们实际上可以确定的地步。
Exercise, diet, cognitive stimulation showed some positive effects, although the evidence was not so strong that we could actually consider these firmly established.
我听说在一些农场防疫之后也出现了疫情的爆发，“所以我担心安全性，不确定疫苗的效果。
"I've heard that on other farms even after vaccination they have seen some outbreaks, so I'm worried about the safety and feel uncertain about the effects of the vaccine, " Hwang says.
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