她有一双长长的耳朵用英语怎么说

"She has long ears" 是描述她有一双长长的耳朵的正确表达方式。

来源：
long 是形容词，用来描述长度。ears 是名词，指耳朵。

英文例句及其中文翻译：

"She has long ears like a rabbit." (她有像兔子一样长长的耳朵。)
"He noticed her long ears and couldn't stop staring." (他注意到了她长长的耳朵，不能停止凝视。)
"The elf's long ears were a sign of his magical heritage." (精灵长长的耳朵是他魔法遗产的标志。)