Esperanto was invented as an auxiliary language.

世界语是作为辅助语发明的。

《牛津词典》

The occurrence of it is related with the direct or indirect involvement of the auxiliary language motor area.

其发生与语言运动辅区的直接或间接受累有关。

youdao

Esperanto is an artificial language, designed to serve internationally as an auxiliary means of communication among speakers of different languages.

世界语是一种人造语言，目的是充当国际上不同语言使用者之间交流的辅助手段。

youdao

By the nineteenth century, the dream of constructing a philosophical language capable of expressing universal truths had given way to the equally ambitious desire to unite the world through a single, easy-to-learn, politically neutral, auxiliary language.

NEWYORKER: Utopian for Beginners