Esperanto was invented as an auxiliary language.

世界语是作为辅助语发明的。

《牛津词典》

To meet the needs of this conflict, wretchedness has invented a language of combat, which is slang.

为了适应这种斗争的需要，穷人便发明了一种战斗的语言，这便是黑话。

youdao

We may see stories about fratricidal civil wars, both in the United States and in invented lands, and stories in which next-door neighbors do not even share a common language.

我们会在一些故事里看到碎片化发展到极端情况时产生的严重或幽默的后果。 我们也可能看到关于同族内战的故事，既可以发生在美国，也可以发生在虚构的地方；有的故事会告诉我们隔壁邻居跟我们讲的不是同一种语言。

youdao

Now in the middle years of the seventeenth century during the English revolution that saw the execution of the king and saw the establishment of a non-monarchic republican government, Milton had practically invented the formal language, the literary language, of insubordination.

7世纪中期,英国革命期间，国王被处决,一个非君主制的共和国政府建立了起来，弥尔顿实际上创造出了一套正式词汇，一套用来表述“反抗“的文学词汇。

耶鲁公开课 - 弥尔顿课程节选

We have invented language and unwritten rules of behavior that are emotion-neutral.

FORBES: Here Lies Buried Treasure

Almost a decade before The Cocteau Twins popularised the approach, Bowie sang in a completely self-invented language on the 1977 Low album track, Subterraneans.

BBC: Sixty-six facts about David Bowie

He invented a language, traditions and an entire culture that nearly everyone he met believed true.

FORBES: Swift's Psalmanazar: When 'Titillating' Means More Than 'True'