丑小鸭的英文翻译是"ugly duckling"。这个故事的来源是丹麦作家安徒生的童话《丑小鸭》。

例句：

The ugly duckling turned into a beautiful swan.

丑小鸭变成了一只美丽的天鹅。

Despite being bullied and ridiculed, the ugly duckling remained optimistic.

尽管被欺负和嘲笑，丑小鸭仍然乐观。

The ugly duckling's story is a reminder to never judge a book by its cover.

丑小鸭的故事提醒我们不要以貌取人。