I'm looking for a way to say that something it is really difficult, like when you start learning a new language, or reading something that you are not familiar with and there are terms that you never heard before. I found this "double Dutch", but not sure if it is still used or substituted by doublespeak or double talk.
The sentence is
[...]better understand all the "technical" terms that sometimes sound double Dutch.
I'm wondering if I should add like:
sound like double Dutch.
From the comment (thanks @Phill Healey): Adding 'like' would make it a literal statement, and thus mean something that had the same phonics as 'double Dutch' So for example 'bubble hutch' would "sound like" 'double Dutch' as opposed to something which is not-understood.
edit: Do the words gobbledygook OR gibberish make more sense for what I want to say?