坚持梦想用英语可以说为 "persist in one's dreams" 或 "keep pursuing one's dreams". 这个短语的来源可能源于人们对于梦想的认识，即梦想是一种目标或愿望，而坚持梦想就是不放弃追求这个目标或愿望的决心和努力。

例句：

It's important to persist in one's dreams, no matter how difficult they may seem.

She never gave up on her dream of becoming a successful artist and continued to keep pursuing it.

翻译：

坚持梦想很重要，无论它们看起来多么困难。

她从未放弃成为成功艺术家的梦想，并继续追求它。