Perdeaua albă din camera de zi este lungă, dar frumoasă.

In Romanian, the definite article is usually attached to the end of the noun instead of standing as a separate word.

• perdea = curtain
• perdeaua = the curtain
• cameră = room
• camera = the room

So Perdeaua albă means the white curtain, and camera de zi means the living room.

That is the normal Romanian word order for most descriptive adjectives.

• perdeaua albă = the white curtain

In Romanian, adjectives often come after the noun, especially in ordinary, neutral descriptions. Putting the adjective before the noun is possible, but it usually sounds more emphatic, literary, or stylistically marked.

Because they all agree with perdeaua, which is a feminine singular noun.

Romanian adjectives change form to match the noun’s:

• gender
• number
• sometimes definiteness-related patterns in other structures

Here, the noun is feminine singular, so the adjectives are also feminine singular:

• alb → albă
• lung → lungă
• frumos → frumoasă

This is very different from English, where adjectives usually do not change.

camera de zi is a normal Romanian expression for living room.

Literally, it is something like the day room:

• camera = the room
• de zi = for daytime / of day

You do not need to translate it word-for-word when learning it. It is best treated as a set phrase meaning living room.

This is a very common learner question.

In this sentence, din camera de zi is attached to the noun phrase perdeaua albă and helps identify which curtain we mean: the curtain from/in the living room.

Romanian often uses din + place in this kind of noun modifier:

• cartea din bibliotecă = the book in/from the library
• masa din bucătărie = the table in the kitchen

If you wanted to say where the curtain is as the main statement, you would normally say:

Perdeaua albă este în camera de zi.
= The white curtain is in the living room.

So:

• din camera de zi = identifies the curtain
• în camera de zi = states the curtain’s location

este is the 3rd person singular present form of a fi, which means to be.

• eu sunt = I am
• tu ești = you are
• el/ea este = he/she is

Here the subject is singular, perdeaua, so Romanian uses este:

• Perdeaua ... este lungă = The curtain ... is long

In standard Romanian, you normally keep este in a sentence like this.

Because dar means but and introduces a contrast.

Here the sentence contrasts two qualities:

• lungă = long
• frumoasă = beautiful

So:

• este lungă, dar frumoasă = is long, but beautiful

In Romanian, it is standard to put a comma before dar in this kind of structure.

ă is a short, central vowel. For an English speaker, it is often similar to the weak vowel sound in the first syllable of about.

So the ending in:

• albă
• lungă
• frumoasă

does not sound like the a in father.

It is a very common Romanian sound, so it is worth practicing early.

Sometimes yes, because Romanian word order is more flexible than English. But the sentence you were given is the most neutral and natural version for a learner:

Perdeaua albă din camera de zi este lungă, dar frumoasă.

If you move things around, the sentence may sound:

• more emphatic
• more literary
• less neutral

So for now, this is the safest pattern to copy:

• noun + adjective
• location phrase after the noun
• este
• adjective(s) describing the subject

Yes. Both lungă and frumoasă describe the same noun, perdeaua.

So the structure is:

• Perdeaua ... este lungă = The curtain is long
• Perdeaua ... este frumoasă = The curtain is beautiful

Romanian combines them into one sentence: Perdeaua ... este lungă, dar frumoasă.

Because both adjectives refer to the same feminine singular noun, both stay in the feminine singular form.