在英语中，"unhappy childhood" 或 "unhappy childhood years" 可以用来表示 "不快乐的童年"。这个短语的来源可能源于人们在谈论个人成长过程中的不愉快经历时使用。
以下是一些英文例句及其中文翻译：
She had an unhappy childhood because her parents were always fighting. (她的童年不快乐，因为父母总是吵架。)
He still struggles with the emotional effects of his unhappy childhood. (他仍然在努力应对他不快乐的童年所造成的情感影响。)
Despite his unhappy childhood, he has managed to overcome his past and create a happy pfe for himself. (尽管他的童年不快乐，但他成功克服了过去，为自己创造了一个幸福的生活。)