'un langage international'
"international (e)"
French is an official language within the United Nations, the International Olympics comittee, and many other international institutions. The term "lingua franca", meaning a language which could get you understood everywhere, literally means "French language" in Italian. Even if it is now overtaken by English, it is still used in many parts of the world.
Français
Comment dit-on ...?
To say the word beard in the French language you say barbe. This word is said as barba in the Italian language and in Latin it is mentum.
c'est
yes, "en quelle langue" is the French translation of "in what language"
comment dire language
"Französisch Sprache."
In French, "with" is typically translated as "avec."
The international official language of fencing is French.
la langue de la langue françaiseIn English we do not say "the language of French." We say the "language of France," or the "French language." La langue française, in either case.