Projekcijsko platno stoji između ulaza i izlaza.

Because the adjective has to agree with the noun in gender, number, and case.

Here, platno is a neuter singular noun, so the adjective must also be neuter singular:

• projekcijski = masculine
• projekcijska = feminine
• projekcijsko = neuter

So:

• projekcijsko platno = projection screen

This is the normal agreement pattern in Croatian.

Platno literally means cloth, canvas, or screen, depending on context.

In this sentence, projekcijsko platno means a projection screen or movie screen.

So even though platno can mean fabric in other contexts, here it clearly refers to the screen used for projecting images.

Yes, stoji literally means stands, from the verb stajati.

But in Croatian, just like in English sometimes, this verb is often used for the position or location of an object, not only for a person physically standing.

So here stoji means something like:

• stands
• is standing
• is positioned
• is located

For an object such as a screen, stoji sounds natural if you want to emphasize that it is set there in an upright position.

Yes, you could say that, but the meaning and style are slightly different.

• Projekcijsko platno je između ulaza i izlaza.
  = The screen is between the entrance and the exit.

• Projekcijsko platno stoji između ulaza i izlaza.
  = The screen stands / is positioned between the entrance and the exit.

Using stoji gives a slightly more physical, visual sense of placement. Using je is more neutral and simply states location.

Because after između in this sentence, Croatian uses the genitive case.

The basic forms are:

• ulaz = entrance
• izlaz = exit

In the genitive singular, they become:

• ulaza
• izlaza

So:

• između ulaza i izlaza = between the entrance and the exit

This is very important: many Croatian prepositions require a specific case, and između commonly takes the genitive when talking about position.

In standard Croatian, između is normally used with the genitive.

Examples:

• između kuća = between the houses
• između stola i vrata = between the table and the door
• između ulaza i izlaza = between the entrance and the exit

So for learners, it is safest to remember:

• između + genitive

Because Croatian, like English, usually uses the preposition only once when linking two nouns with i (and).

So:

• između ulaza i izlaza = between the entrance and the exit

You do not normally repeat the preposition before the second noun.

This works the same way in many Croatian phrases:

• s mamom i tatom = with mum and dad
• bez šećera i mlijeka = without sugar and milk

Yes. Croatian word order is fairly flexible because case endings show the grammatical relationships.

So these are all possible:

• Projekcijsko platno stoji između ulaza i izlaza.
• Između ulaza i izlaza stoji projekcijsko platno.

The second version puts more focus on the location first: Between the entrance and the exit stands the projection screen.

The first version is the most straightforward, neutral order.

Because Croatian does not have articles like English a / an / the.

So platno can mean:

• a screen
• the screen

The exact meaning depends on context.

Likewise:

• ulaz can mean an entrance or the entrance
• izlaz can mean an exit or the exit

English needs articles, but Croatian usually does not.

In this sentence, they are understood as genitive singular:

• ulaz → ulaza
• izlaz → izlaza

That matches the meaning between the entrance and the exit.

In other contexts, some noun forms can look similar, so learners sometimes need context to tell singular and plural apart. But here the meaning strongly points to singular.

A rough pronunciation guide is:

pro-yek-TSIY-sko PLAT-no STO-yee iz-MYEH-doo OO-la-za ee IZ-la-za

A few useful notes:

• j is pronounced like English y
• c is pronounced like ts
• č and ć are different sounds in Croatian, but neither appears here
• lj and nj also do not appear here
• stoji sounds like sto-yi, not like English stoy

A more natural rhythm would be:

Projekcijsko platno | stoji između | ulaza i izlaza.

Here are the basic forms:

• projekcijsko ← adjective projekcijski = projection, projecting
• platno = screen, canvas, cloth
• stoji ← verb stajati = to stand
• između = between
• ulaza ← noun ulaz = entrance
• i = and
• izlaza ← noun izlaz = exit

This is a good habit in Croatian: when you meet a sentence, try to identify the dictionary form of each word, because endings change a lot.