“美梦破灭”常见的英文表达有 “the bubble bursts”、“one's dream is shattered” 或 “the sweet dream comes to an end/is crushed” 等。具体使用可根据语境选择：
1、 The bubble bursts（形象比喻，适用于形容原本美好的幻想突然破灭）
例句： Her hopes of becoming a famous singer burst like a bubble when she failed the audition.（她试镜失败后，成为著名歌手的希望破灭了。）
2、 One's dream is shattered（强调梦想被彻底摧毁，情感更强烈）
例句： His dream of starting his own business was shattered by the economic crisis.（经济危机让他自主创业的梦想破灭了。）
3、 The sweet dream comes to an end/is crushed（更直白地描述梦想的终结或被粉碎）
例句： After years of hard work, he found his sweet dream of a promotion crushed by office politics.（经过多年的努力，他发现升职的美梦被办公室政治粉碎了。）
根据具体语境和情感表达需求，选择最贴切的翻译即可。