Cărăm salteaua cu căruciorul.

Romanian usually puts the definite article at the end of the noun, not before it.

• saltea = mattress

• salteaua = the mattress

• cărucior = cart / stroller / trolley
• căruciorul = the cart / the stroller

So instead of saying a separate word like English the mattress, Romanian says salteaua.

This is because of how the feminine singular definite article attaches to nouns.

For many feminine nouns ending in -a, the definite form is made by replacing that final -a with -aua or by attaching the article in a form that produces -aua in pronunciation/spelling.

So:

• saltea → salteaua

This is just the normal definite form of that noun, and it has to be learned as part of the noun’s pattern.

Because cărucior is a masculine/neuter noun, and in the singular definite form it takes -ul.

• cărucior = cart / stroller
• căruciorul = the cart / the stroller

This is one of the most common masculine/neuter definite endings in Romanian.

Cărăm comes from the verb a căra, meaning to carry, to haul, or to transport by carrying.

The ending -ăm tells you the subject is we in the present tense:

• eu car = I carry
• tu cari = you carry
• el/ea cară = he/she carries
• noi cărăm = we carry
• voi cărați = you all carry
• ei/ele cară = they carry

So cărăm means we carry / we are carrying.

Romanian often leaves out subject pronouns when they are clear from the verb ending.

Since cărăm already means we carry, you do not need noi.

• Cărăm salteaua cu căruciorul. = We carry the mattress with the cart.
• Noi cărăm salteaua cu căruciorul. = same basic meaning, but noi adds emphasis, like we do it.

This is similar to Spanish or Italian.

Here cu means with, but more specifically it shows the means or tool used to do the action.

So cu căruciorul means:

• with the cart
• using the cart
• by means of the cart

Romanian usually uses cu for this idea instead of a special instrumental case ending.

Because Romanian can use the definite article after cu when the object is understood as a specific, identifiable thing.

• cu căruciorul = with the cart / using the cart
• cu un cărucior = with a cart
• cu cărucior can sometimes occur in certain contexts, but it is less natural here than cu un cărucior or cu căruciorul

In your sentence, the speaker probably has a particular cart in mind.

Because salteaua is a direct object, but it is inanimate.

In Romanian, pe is often used before specific human direct objects, and sometimes with animals or personified beings, but not normally with ordinary inanimate objects.

So:

• Cărăm salteaua. = correct
• Văd fata. / O văd pe fata aceea. = with a human object, pe is common or required depending on the structure

Since a mattress is just an object, no pe is needed.

This is a very natural question.

• a căra = to carry / haul, often something heavy, bulky, or physically moved by lifting or transporting
• a duce = to take / bring / carry in a broader sense

So Cărăm salteaua suggests physically moving the mattress, possibly with effort. It sounds very appropriate for a heavy object like a mattress.

If you used ducem, the sentence would still be understandable, but cărăm is more vivid and natural for this kind of object.

Yes. Cărucior can refer to several wheeled objects depending on context, such as:

• stroller / baby carriage
• small cart
• trolley

In this sentence, because you are moving a mattress, the most likely meaning is something like cart or trolley, not a baby stroller.

Context is what tells you which meaning is intended.

A rough pronunciation guide is:

kuh-RUM sal-TEA-wa koo kuh-roo-CHO-rul

A few helpful notes:

• ă is a short central vowel, something like the a in sofa
• tea in salteaua is pronounced as part of a flowing sequence: tea-wa
• ci in căruciorul gives a ch-like sound here: -cior- ≈ chor

The natural stress is roughly:

• căRĂM
• salTEAua
• căruCIOrul

Yes, Romanian word order is fairly flexible, though some versions sound more neutral than others.

The most neutral order here is:

• Cărăm salteaua cu căruciorul.

You could also hear:

• Cu căruciorul cărăm salteaua. = emphasizes with the cart
• Salteaua o cărăm cu căruciorul. = emphasizes the mattress

So the original sentence is the plain, standard way to say it, but other orders are possible for emphasis.

You would normally use the indefinite article:

• Cărăm o saltea cu un cărucior. = We are carrying a mattress with a cart.
• Cărăm salteaua cu un cărucior. = We are carrying the mattress with a cart.
• Cărăm o saltea cu căruciorul. = We are carrying a mattress with the cart.

So the choice between salteaua / o saltea and căruciorul / un cărucior depends on whether the noun is definite or indefinite.