这讨论越来越深奥，使我难以理解。

This discussion's getting too deep for me.

《牛津词典》

我俩都是生物学家，便转而去讨论这难以捉摸的变色龙。

Both of us are biologists, so we swerved to talk about the elusive chameleon.

youdao

但是当你在与许多人进行电子邮件交流讨论时，很快会发现收件箱已经塞满了一堆堆的信息，使得讨论难以进行。

But an E-mail discussion between more than a few people can quickly fill the participants' in-boxes with a deluge of messages, making the argument hard to follow.

youdao