"Limbile vechi sunt grele."

Translation: The old languages are hard.

[NikaBergant]

Limbile vechi sunt bune (:

[FerEtayoRguez]

Do you really need the article here? I feel the Romanian sentence could translate as Old languages are hard, even though in Romanian you express generality with the definite form...

[SamJustin201]

You definitely don't need the English definite article here. If you're expressing a generality, it's always omitted.

[cosmo-pedant]

I join in this question, but also wonder why "grele" sounds like it is pronounced with three syllables. Oh, perhaps it is because the "r" is rolled!

[SamJustin201]

It's only two syllables. The rolled r sound is pretty difficult for English speakers, but once you get the hang of it, it shouldn't add any extra syllables

[gagasem]

I know this is the unit about articles but Duolingo should let you omit the article in English, to stay true to the language

[Wowa269009]

Does this sentence mean that old languages are hard to learn?

[abcdefg-1]

Yes, it does. Since "grea/grele" can also mean "heavy," you could also use "sunt dificile" ("are difficult") or "dificile de învățat" ("difficult to learn"), which can remove some of the ambiguity.