Sperm whales may make their own vowel sounds, similar to human language
抹香鲸通过发出咔嗒声进行交流，使用不同的“元音”，其方式与人类语言类似
Sperm Whales Have a Language and Its Structure Is Remarkably Like Our Own
它们有元音，有些鲸鱼比其他鲸鱼“说话”得更快。
