It may be difficult to do at first. Don't let this discourage you.

开始时做起来也许比较困难。不要让这个泄你的气。

《柯林斯英汉双解大词典》

Paper cutting sounds very easy but it can be difficult to do.

剪纸听起来很容易、但做起来可能很难。

youdao

It would be difficult to do this trick with conventional detectors.

但在常规的探测器大行其道的现在，这很难。

youdao

It would be difficult, even painful,to do so.

VOA: special.2009.12.06

So I will be really excited to do that, but that is very difficult to get.

如果能成功的话我真的很高兴，但是这个奖学金很难申请到。

耶鲁的著名人士 - SpeakingMax英语口语达人

The response to "Do you mind" question can be difficult.

对于“Do you mind”句型的回答可能有点复杂。

Do you mind 课堂 - SpeakingMax英语口语达人

Either way, according to the economists, it would be difficult to do much worse than George Bush.

ECONOMIST: The Economist's poll of economists

"It would probably be difficult to do the traditional or banner advertising in this space, " he says.

BBC: Television finds salvation in the zombie apocalypse

Borer says such a trial might be difficult to do, especially if its only aim is to prove the drug is safe.

FORBES: J&J's Vioxx-Like Bind