Occasionally, in some difficult musical compositions, there are beautiful, but easy parts—parts so simple a beginner could play them.

有时候，一些很难的音乐作品中会有一些优美但简单的部分——初学者都能演奏的简单部分。

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We thought it was easy, but it turned out that the exam was very difficult.

我们以为这个考试很简单，但其实很难。

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The first question was difficult, but the rest were pretty easy.

第一个问题很难，但其余的都相当简单。

《牛津词典》

Not that it's ever difficult, but it's extra easy to find a party in New Orleans the next few days.

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"I hope it helps but of course our history is not so easy for many years and many different difficult situations but I think step by step we can make it better, " said Olga, who is Russian.

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Tony says it is difficult to predict stock market returns but relatively easy to predict volatility.

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