The traditional study about idioms is generally descriptive not prescriptive.
对于习语的翻译，传统的研究多是描述性，而非规定性的。
The psychologists insist, however, that they are not being prescriptive.
然而，心理学家坚称他们并非一味说教。
The step sequence is only one method and is not intended to be prescriptive.
按照步骤顺序只是一种方法而已，不是必须这样做的。
The step sequence is only one method and is not intended to be prescriptive.
按照步骤顺序只是一种方法而已，不是必须这样做的。
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