"患难兄弟"在英语中可以翻译为 "brother in adversity" 或 "comrade in adversity"。这个说法最初来自古希腊哲学家亚里士多德，他在他的著作《政治学》中写道："患难见真情，也就是说，在逆境中才能看出人们的真正情感"。
下面是一些英文例句及其中文翻译：
"In times of trouble, it's important to have a brother in adversity who can support you and help you through the tough times." (在逆境中，有一个患难兄弟能够支持你并帮助你度过困难时期是很重要的。)
"When I was going through a difficult period in my pfe, my sister was my brother in adversity, always there for me and offering me support and encouragement." (当我经历人生中困难时期时，我的姐姐是我的患难兄弟，总是在我身边，给我支持和鼓励。)
下面是一些英文例句及其中文翻译：
"In times of trouble, it's important to have a brother in adversity who can support you and help you through the tough times." (在逆境中，有一个患难兄弟能够支持你并帮助你度过困难时期是很重要的。)
"When I was going through a difficult period in my pfe, my sister was my brother in adversity, always there for me and offering me support and encouragement." (当我经历人生中困难时期时，我的姐姐是我的患难兄弟，总是在我身边，给我支持和鼓励。)