Demontăm mobilierul.

Romanian often drops the subject pronoun when it is already clear from the verb ending.

Here, demontăm means we dismantle / we are dismantling, and the ending -ăm shows that the subject is we.

So:

• Demontăm mobilierul = We dismantle the furniture
• Noi demontăm mobilierul = We dismantle the furniture

Both are correct, but noi is usually only added for emphasis, contrast, or clarity.

Demontăm is the 1st person plural present tense form of the verb a demonta, meaning to dismantle, to take apart, or to disassemble.

So the verb works like this in the present tense:

• eu demontez = I dismantle
• tu demontezi = you dismantle
• el/ea demontează = he/she dismantles
• noi demontăm = we dismantle
• voi demontați = you all dismantle
• ei/ele demontează = they dismantle

In this sentence, demontăm tells you both the action and the subject.

It can mean both.

Romanian present tense often covers both the simple present and the present continuous meanings that English separates:

• Demontăm mobilierul = We dismantle the furniture
• Demontăm mobilierul = We are dismantling the furniture

The exact meaning depends on context.

If you are describing what is happening right now, it will usually be understood as we are dismantling the furniture.

Mobilierul means the furniture.

It comes from:

• mobilier = furniture
• mobilierul = the furniture

So the ending -ul is the definite article, attached to the end of the noun.

This is a key feature of Romanian: instead of putting a separate word like the before the noun, Romanian usually adds the definite article to the noun itself.

Because Romanian normally uses a postposed definite article. That means the equivalent of the is added to the end of the noun.

Examples:

• băiat = boy

• băiatul = the boy

• scaun = chair

• scaunul = the chair

• mobilier = furniture
• mobilierul = the furniture

So mobilierul is literally furniture-the, but in natural English it simply means the furniture.

Grammatically, mobilier is treated as a singular noun, even though in English furniture refers to a collection of items.

So:

• mobilierul = the furniture
• not the furnitures

Like English furniture, it is generally a collective / mass noun, not a normal countable plural.

If you want to refer to individual items, Romanian often uses words like:

• piese de mobilier = pieces of furniture
• mobilă can also be used in many contexts to mean furniture

Because the sentence is talking about specific furniture, not furniture in general.

Compare:

• Demontăm mobilier. = We are dismantling furniture.
  This sounds more general or less natural in many contexts.

• Demontăm mobilierul. = We are dismantling the furniture.
  This refers to some specific furniture already known in the situation.

In many practical situations, Romanian prefers the definite form when the object is specific and identifiable.

Because mobilierul is a direct object, and with an inanimate noun like this, Romanian normally does not use pe.

The marker pe is commonly used with:

• people
• specific animate direct objects
• some pronouns

For example:

• Văd copilul. = I see the child.
• Îl văd pe copil. = I see the child.
  (very common with a specific person/animate being)

But with an inanimate thing such as mobilierul, you just say:

• Demontăm mobilierul.

No pe is needed.

Yes. It is completely normal.

Romanian word order is fairly flexible, but this sentence has a very common structure:

• Verb + object

Since the subject we is understood from the verb ending, the sentence naturally begins with the verb:

• Demontăm mobilierul.

You could also say:

• Noi demontăm mobilierul.

That would be more explicit, but not necessary.

Word order can change for emphasis, but Demontăm mobilierul is the neutral, natural version.

A rough guide is:

de-mon-TUHM mo-bi-li-E-rul

A few helpful points:

• ă is a short central vowel, something like the a in sofa, but shorter and less stressed
• demontăm is stressed on the last syllable: -tăm
• mobilierul is pronounced as one word, because it is one word in Romanian

A more careful approximation:

• demontăm ≈ de-mon-tuhm
• mobilierul ≈ mo-bi-li-ye-rul

Yes. That is a very natural translation.

The verb a demonta can be translated in several similar ways depending on context:

• to dismantle
• to take apart
• to disassemble

So Demontăm mobilierul could mean:

• We dismantle the furniture
• We are dismantling the furniture
• We are taking apart the furniture
• We are disassembling the furniture

All of these are reasonable, depending on the situation and style.