The poor kept big families due to the value rationality, rather than the practical rationality.
贫穷人家维系大家庭不是实践理性作用的结果，主要出于价值理性的追求。
It proves the rationality and practical value of this structure through its actual application.
通过实际使用，证实了该结构的合理性以及实用价值。
The rationality of the new process is proved by practical production.
最后通过实际生产，证明该工艺的合理性。
The rationality of the new process is proved by practical production.
最后通过实际生产，证明该工艺的合理性。
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