Obiectele de primă necesitate sunt în valiză.

Because -le is the definite article attached to the noun.

• obiecte = objects / items
• obiectele = the objects / the items

Romanian usually puts the at the end of the noun instead of using a separate word like English does.

So in this sentence:

• Obiectele = the objects

Because obiect forms its plural as obiecte, and the definite plural form is obiectele.

The pattern is:

• singular indefinite: obiect
• singular definite: obiectul
• plural indefinite: obiecte
• plural definite: obiectele

Not all Romanian nouns use the same endings, so this is something you learn with each noun.

Literally, it means something like of first necessity.

In natural English, that becomes:

• essential
• basic necessities
• necessities
• essential items

So obiecte de primă necesitate is a fixed Romanian expression for essential items or basic necessities.

Here, primă agrees with necesitate, not with obiectele.

The phrase is:

• de primă necesitate

And necesitate is a feminine singular noun, so the adjective must match it:

• primă = feminine singular form

So the structure is basically:

• of first necessity

Even though the whole noun phrase refers to plural objects, primă belongs specifically to necesitate.

Because this is a set expression built with de, similar to English phrases like:

• items of basic necessity
• articles of first necessity

In Romanian, de often links nouns in this kind of descriptive phrase.

So:

• obiecte de primă necesitate = essential items / items of basic necessity

You should think of it as a chunk to remember, not something you need to translate word by word every time.

Because the subject is plural.

• obiectele = the objects / the items → plural
• plural form of a fi (to be) in the present tense = sunt

Compare:

• Obiectul este în valiză. = The object is in the suitcase.
• Obiectele sunt în valiză. = The objects are in the suitcase.

It means in the suitcase or in a suitcase, depending on context.

• în = in
• valiză = suitcase

Romanian uses în very much like English in for location inside something.

Because valiză here is indefinite in form.

• valiză = a suitcase
• valiza = the suitcase

So:

• în valiză = in a suitcase or sometimes in the suitcase, depending on context
• în valiza = clearly in the suitcase

Romanian sometimes leaves a noun indefinite where English might naturally use the, especially if the context already makes it clear which suitcase is meant.

No, not by itself. Valiza is a definite form, but after a preposition like în, Romanian normally uses the form:

• în valiză = in a suitcase / in the suitcase
• în valiza mea = in my suitcase
• în valiza mare = in the big suitcase

If you want a clearly definite noun without adding anything else, Romanian often still uses în valiză, with definiteness understood from context.

The given word order is the most neutral and natural:

• Obiectele de primă necesitate sunt în valiză.

Romanian word order is somewhat flexible, but changing it usually changes the emphasis.

For example:

• În valiză sunt obiectele de primă necesitate.
  = The essential items are in the suitcase / It is in the suitcase that the essential items are

This version puts more focus on where they are.

A rough English-friendly guide would be:

ob-YEK-te-le de PREE-muh neh-seh-see-TA-te soont in va-LEE-zuh

A few helpful notes:

• ie in obiectele sounds like ye
• ă is a short central vowel, something like the final sound in sofa
• î in în is a close central sound that English does not really have; learners often approximate it at first
• z in valiză is pronounced like English z

Yes, it is natural and understandable, especially in formal or practical contexts.

You may also see similar phrases such as:

• articole de primă necesitate = essential goods
• lucruri de primă necesitate = essential things
• produse de primă necesitate = basic necessities / essential products

So this sentence sounds normal, especially if someone is talking about packing, travel, aid supplies, or practical needs.

Yes, very often that is more natural in English.

Although obiecte literally means objects/items, in many situations English would simply say:

• things
• items
• belongings

So depending on context, obiectele de primă necesitate could be understood as:

• the essential items
• the necessary things
• the basic necessities

It follows a straightforward pattern:

• Obiectele de primă necesitate = subject
• sunt = verb
• în valiză = location phrase

So structurally it is:

[The essential items] [are] [in the suitcase].

This is a very common Romanian sentence pattern: subject + a fi + location

For example:

• Cheile sunt pe masă. = The keys are on the table.
• Hainele sunt în dulap. = The clothes are in the closet.