Learn Romanian: Acolo sunt niște sticle. - There are some bottles there.

The singular is sticlă (bottle). For many feminine nouns ending in -ă, the plural is formed by replacing the -ă with an -e. This is one of the most common ways to make feminine nouns plural.

Since this lesson covers the definite plural suffix, how would I say "the bottles" instead of "some bottles"?

You would say sticlele. You start with the plural form sticle and attach the definite plural suffix for feminine nouns, which is -le.

Is niște the plural version of words like "a" or "an"?

Yes, exactly! While it translates to "some" in English, niște acts as the plural indefinite article in Romanian. It is placed right before the noun, just like un or o do for singular words.

The English translation says "There are... there". Why does the Romanian sentence only have one acolo?

In English, "there are" is just a grammar phrase we use to state that something exists. In Romanian, the verb sunt (are) all by itself can mean "there are". The word acolo specifically means the physical location "over there". So, Acolo sunt literally means "Over there exist".