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I don't want to be perfect. I want to be real.
What you actually pay for something is at least twice the listed price because of the energy, time, money needed to set it up, learn, maintain, repair, and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
对注意力的研究为了解大脑如何选择、整合和处理信息提供了一个窗口。