Unfortunatemails are so poorly written that recipients must struggle to figure out why they're reading thee-mail and what they're supposed to do about it.

不幸的是，很多电子邮件都写得非常差，以至于邮件接收者必须努力搞清楚他们为什么在读那封电子邮件以及他们应该针对那封电子邮件的内容做什么事情。

youdao

Why this struggle, and why must Milton struggle with such awkward metaphysical categories in order simply to address properly the power of light?

为什么弥尔顿必须,与这样一个奇怪的抽象的东西斗争,仅仅是为了恰当的描述光明的力量？

耶鲁公开课 - 弥尔顿课程节选

But even if drilling didn't cause the problems, McIntyre said she doesn't understand why the community must struggle to find the answer.

NPR: Cause Of Off-Color, Fetid Water Eludes Pa. Town