Why does this seemingly rational choice strike a number of you as not understandable, as not entirely rational, as in some sense less a free choice than a compulsion or necessity?
为什么这个看似理性的选择，会让你们许多人觉得难以理解、不尽合理，甚至在某种意义上是出于被迫或必须，而非自愿呢？
Why does this seemingly rational choice strike a number of you as not understandable, as not entirely rational, as in some sense less a free choice than a compulsion or necessity?
为什么这个看似理性的选择，却会让你们许多人无法理解、觉得不尽理性，甚至有的会觉得是被迫作出的必要的选择？
Optimization results show the necessity and feasibility of rational transformation and maintenance based on performance study of units.
优化结果表明：通过对机组的特性研究，进行合理的改造、维护是非常必要的，而且是可行的。
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