描述性规范由举例的方法形成。

Descriptive norms inform by way of example.

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这种反对乱丢垃圾的运动的下一个问题在于它的描述性规范对其命令性规范是起反效果的。

The problem with the anti-littering campaign then is that its descriptive norm is counterproductive to its injunctive norm.

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作为一个基于XML的描述性规范语言，WS - CDL缺乏形式化的模型和验证机制，难以保证协作和交互的正确性。

As a XML-based descriptive language, WS-CDL lacks a formal model and verification mechanism to guarantee the correctness of collaborations and interactions.

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