There may have been many spies and intelligence officers during the Napoleonic Wars, but it is usually extremely difficult to find the material they actually provided or worked on.

在拿破仑战争时期，可能有许多间谍和情报军官，但是通常极难找到他们实际提供或者工作的材料。

youdao

But most find it difficult to agree on what a "general education" should look like.

但是大多数人发现很难就 “通识教育” 应该是什么样子达成一致。

youdao

But many of us find it difficult to keep the food connection with our busy life.

但是我们很多人发现很难把食物和我们忙碌的生活联系起来。

youdao

But the professor says it is difficult to find enough feathers from a single dinosaur to recreate all its colors.

VOA: special.2010.03.16

Some people find that a psychologically difficult thing to accept, but I've believed that pretty much all my life, so I'm quite comfortable with it.

有些人会觉得心理上,很难接受这一点，但在我的人生中，我一直相信这一点，我也坦然接受这一点。

普林斯顿公开课 - 人性课程节选

If you go to the right region of an adult brain you might be able to find cells like this but it's more difficult.

如果你在一个成人大脑的正确区域找,你也许能找到这样的细胞,但会更困难一些

耶鲁公开课 - 生物医学工程探索课程节选

They had to go to a wedding, but found it difficult to find new shoes in their size.

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Back then, similar information was available from magazines but it was difficult to find a forum where you could offer your own information.

CNN: Meet you at the gumtree

The problem is that this would not only undermine years of conservation efforts, but it will be difficult to find a new home for the wolves.

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