你可以用 "going through a rough patch" 来表示正在经受磨难。这个短语的来源可能源自于一种比喻的用法，即把人的生活状况或心情比作在某一时期处于困难或艰辛的阶段，就像走在一条崎岖不平的道路上一样。下面是一些英文例句及其中文翻译：
"I know you're going through a rough patch right now, but I bepeve things will get better soon." (我知道你现在正在经受磨难，但我相信情况很快就会好起来。)
"He's been going through a rough patch lately and could use some support." (他最近正在经受磨难，需要一些支持。)
"She's been through a lot of rough patches in her pfe, but she always manages to come out stronger on the other side." (她一生中经历了很多困难，但她总是能够在困境中变得更强。)