Many students find the experience of attending university lectures to be a confusing and frustrating experience.

很多学生认为，参加大学讲座是一种困惑和沮丧的经历。

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This has been a slow and frustrating process.

他说：“这是一个缓慢和令人烦躁的过程。”

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The section on lateral thinking is both fun and frustrating.

关于横向思维的部分即有趣又令人失落。

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What was the most frustrating domestic and foreign policy experience that you had?

让你和布什总统以及其他工作人员,有挫败感的政策是什么？

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And so, when you do a search, it is sometimes frustrating.

当你们搜索的时候，有时会很沮丧。

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But first let me walk you through the many confusing and frustrating steps it took.

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Forecasting the timing of such trend changes is always a challenging (and frustrating) exercise.

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It may come in fits and starts, at a pace that can be slow and frustrating.

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