The exercise is simple but important, since it brings these costs out of the realm of speculation into the realm of meaningful discussion.
这项工作很简单,但很重要,因为它使这些成本脱离了臆想的范畴,进入了有意义的讨论的范畴。
So count your blessings, but choose a timetable that keeps the exercise meaningful.
因此记下你的祝福,但是要选择适当的时间以保证这个锻炼有意义。
It is therefore suggested that the most meaningful time horizon to keep in mind for the current exercise is the medium term, i.e. 15 to 20 years.
就目前讨论来说,需要牢记,最有意义的时间框架是中期,即15到20年。
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