Administratorul explică asociației de proprietari întreținerea.

Because -ul is the Romanian definite article attached to the end of the noun.

• administrator = an administrator
• administratorul = the administrator

Romanian usually puts the definite article at the end of the noun, unlike English, which uses a separate word like the.

Because asociației is in the dative case, used here for the indirect object: to the association.

In this sentence:

• administratorul = the subject
• explică = explains
• asociației de proprietari = to the homeowners’ association
• întreținerea = the maintenance / upkeep

So asociația would be the basic definite form (the association), but after a verb like a explica when meaning to explain something to someone, Romanian uses the dative:

• asociația = the association
• asociației = to the association

It means of owners or, more naturally in English, homeowners’.

So:

• asociație de proprietari = owners’ association / homeowners’ association

The preposition de often means of and is commonly used to connect nouns in expressions like this.

Romanian word order is fairly flexible. Here, the sentence follows a very natural pattern:

• Administratorul = subject
• explică = verb
• asociației de proprietari = indirect object
• întreținerea = direct object

This is similar to English The administrator explains the maintenance to the homeowners’ association, except Romanian often allows different orders depending on emphasis.

You could also hear other word orders in Romanian, but this one is normal and clear.

Because întreținerea means the maintenance or the upkeep, not just maintenance in a general, indefinite sense.

• întreținere = maintenance / upkeep
• întreținerea = the maintenance / the upkeep

Romanian often uses the definite form where English may or may not use the, depending on context.

It is the direct object, so in function it is accusative.

In Romanian, many feminine nouns like this have the same form for nominative and accusative when definite:

• întreținerea can be subject or direct object depending on context

Here it is the thing being explained, so it is the direct object.

Mostly yes, but Romanian commonly uses this pattern:

• a explica ceva cuiva = to explain something to someone

So in the sentence:

• explică întreținerea asociației would mean something different or sound unclear
• explică asociației întreținerea clearly means explains the maintenance to the association

The person or group receiving the explanation often appears in the dative.

Yes, but it would mean something different.

• Administratorul explică asociației de proprietari întreținerea
  = The administrator explains the maintenance to the homeowners’ association.

• Administratorul explică întreținerea asociației de proprietari
  = The administrator explains the homeowners’ association’s maintenance / the maintenance of the homeowners’ association.

In the second version, asociației de proprietari is understood as belonging to întreținerea, not as the recipient of the explanation.

You know mainly from the verb pattern and the sentence structure.

The verb a explica often takes:

• someone in the dative = the person receiving the explanation
• something as a direct object = the thing explained

So after explică, the phrase asociației de proprietari is naturally understood as to the homeowners’ association.

Also, if it were mainly possessive, the sentence would more likely be interpreted differently depending on placement, for example:

• întreținerea asociației de proprietari = the maintenance of the homeowners’ association

A helpful approximation is:

a-so-chee-a-tsi-ei

More carefully:

• a as in father
• so as in saw but shorter
• ci before e/i sounds like ch
• ției contains a ts sound because ț is pronounced ts

So asociației sounds roughly like a-so-chee-A-tsyei, with the stress typically on a in -ați-.

It often means maintenance, upkeep, or care, depending on context.

For example:

• întreținerea clădirii = maintenance of the building
• costuri de întreținere = maintenance costs / upkeep costs

In apartment-building contexts, întreținerea can also refer to the regular building expenses or monthly maintenance charges.

So the exact English translation depends on context.

Yes. You could say:

• Administratorul explică întreținerea.

That means The administrator explains the maintenance.

But if you want to say to whom it is explained, Romanian adds the dative phrase:

• Administratorul explică asociației de proprietari întreținerea.

So the indirect object is optional if the context already makes it clear or if it is not important.

Yes, especially in contexts involving apartment buildings, property management, or homeowners’ associations.

The vocabulary is a bit formal or administrative because of words like:

• administratorul
• asociației de proprietari
• întreținerea

But grammatically it is completely normal and useful for real-life Romanian, especially if you deal with housing or building administration.