Esperanto

世界语英释中释nan artificial language invented in 1887 to help people from different countries in the world speak to each other

1 He wants to learn Esperanto..他要学世界语。

2 He teaches Esperanto at that university..他在那所大学教世界语。

3 English is no Esperanto, but as world languages go, it is considerably user-friendly..英语非为世界语，但与各种世界语言相比，其相当容易掌握。