The phrase "preserve the language" is correct and usable in written English.
You could use it in any context in which you want to express the idea of protecting a language from change or destruction. Example sentence: "We must strive to preserve the language, as it is part of our cultural heritage."
Shouldn't we also preserve the language of Beatrix Potter?
Fluent in Yiddish, Mr. Brumberg was active in efforts to preserve the language.
After Portuguese independence in the 12th century, the Mirandese region became distant and isolated enough from the rest of the country that efforts to preserve the language began.
When very few native speakers remained, an attempt was made to preserve the language, and a revival was underway in the late 20th and early 21st centuries.
He resolved to preserve the language at home and in 1981 served as host of a Garifuna program on Radio Belize.
Demetrio T? Yupanqui, a theologian and professor, is trying to preserve the language through a groundbreaking translation of "Don Quixote" that linguists hope will keep Quechua's remaining speakers engaged with the wider world.
The policy seeks to preserve the languages, customs, and cultural traditions of the minority peoples and to afford equal opportunity to all ethnic groups.
"The public education systems are simply not adaptable to preserve Indigenous languages and create fluent speakers...The only way to preserve the languages is to create fluent speakers".
But preserving the language's integrity usually involves quaint, eccentric affectations.
I thought, I have this small thing to contribute, the historical value of certain words, preserving the language of that period".
If the kids find their grandparents' language uncool, all of the well-intentioned outside help by linguists is usually in vain, except for preserving the language as a museum-piece.
