This is an ill-defined concept.

这是一个不确切的概念。

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An ill-defined concept;

一个定义不明的概念；

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This is a broadly-defined concept of art.

这是广义的艺术概念。

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If we think about it, wind chill is an ill-defined concept.

仔细想来，风寒是一个定义不清楚的概念。

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If we think about it, wind chill is an ill-defined concept.

仔细想来，风寒是一个定义不清楚的概念。

youdao