"It's not that difficult," she insists.

“事情并没有像想的那么难，”她坚持说。

《柯林斯英汉双解大词典》

Martha: It's not that difficult, honey.

玛撒：亲爱的，没“那么”难。

youdao

It's not that difficult, if you practice.

实际上要做到这点并不难，只要你勤加练习。

youdao

Police say one thing that makes discussion of this law difficult is that many critics have not read the law.

VOA: special.2010.07.03

I realize I've given you some difficult mathematics, but--it's not that difficult actually-- but I kind of went through it quickly.

我发现我给了你们一些比较难的数学公式，不过，并不是想象的那么难-,我很快就把它们讲完了。

耶鲁公开课 - 金融市场课程节选

A little indirect but not so indirect that is difficult to understand. You should use this often.

有一点委婉，但不至于委婉到让人难以理解。应当尽量多使用这种句型。

Why don't 课堂 - SpeakingMax英语口语达人

However, the domains that have commercial value are relatively few in number and not that difficult to understand.

FORBES: What Is Next For Apple's iAd?

"Technically, it is not that difficult to get somebody off drugs, " he said.

BBC: NEWS | UK | UK drug crime strategy criticised

"It's not that difficult in reality, " said Bashir Mohamoud, Saacid's acting country director.

BBC: Welcome to tough, unpredictable Mogadishu