It is an intentionally vague concept that can be confusing.

它是一个有意含糊的概念，可能会造成误解。

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The understanding, in Wittgenstein's view, is a relatively vague concept.

而理解，在维特根斯坦看来，是一个比较模糊的概念。

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Those nouns express a vague concept or an abstract idea, not a specific action that we can picture.

这些词语描述的都是一个模糊或抽象的概念，不是我们能够明确说明的行动。

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The BJP said it was championing "Hindutva, " a purposely vague concept of Indian culture.

CNN: ASIANOW - TIME Asia

Intervention abroad, particularly of the military sort, must be based on a threat to American citizens and not a vague concept of American interests.

ECONOMIST: Present at the creation?

Honest services fraud is a titanically vague concept.

FORBES: Magazine Article