Замаринованное мясо уже лежит в контейнере.

Замаринованное is a past passive participle used like an adjective. In English, it means something like marinated or that has been marinated.

It comes from the verb замариновать = to marinate.

In this sentence, it agrees with мясо:

• мясо is neuter
• singular
• nominative case here

So the form is замаринованное.

Because grammatical gender in Russian is a property of the noun itself, not of the real-world object.

Мясо ends in -о, and nouns of this type are usually neuter. So adjectives and participles describing it must also be neuter:

• сырое мясо = raw meat
• горячее мясо = hot meat
• замаринованное мясо = marinated meat

This is a very common question.

• маринованное comes from мариновать and often describes something as pickled / marinated as a general quality or result.
• замаринованное comes from замариновать and emphasizes that the marinating has been completed.

So замаринованное мясо strongly suggests meat that has already been marinated.

In many contexts, both can be understandable, but замаринованное highlights the completed action more clearly.

Уже means already.

Here it modifies the whole situation: the meat is already in the container.

Russian word order is flexible, so уже can move around a bit depending on emphasis:

• Замаринованное мясо уже лежит в контейнере.
• Замаринованное мясо лежит уже в контейнере.
• Уже замаринованное мясо лежит в контейнере.

These versions are not always identical in emphasis, but the core meaning stays similar. The original sentence is very natural.

Russian often prefers a position verb where English simply uses is.

Лежать means to lie or to be lying. With food like meat, using лежит sounds natural because the meat is understood as lying there physically.

So:

• мясо лежит в контейнере = the meat is lying / is sitting in the container

English often does not mention position, but Russian often does.

Yes, you could.

• лежит sounds more concrete and physical: the meat is lying there
• находится means is located and sounds more neutral or formal

So:

• Замаринованное мясо уже лежит в контейнере. = natural, everyday, physical
• Замаринованное мясо уже находится в контейнере. = more formal, less vivid

In normal conversation, лежит is usually the more natural choice here.

Because after в, Russian can use either:

• accusative for motion into
• prepositional for location inside

Here the meat is already there, not moving there, so Russian uses the prepositional case:

• в контейнере = in the container

Compare:

• положить мясо в контейнер = to put the meat into the container
• мясо лежит в контейнере = the meat is in the container

It is the prepositional case singular.

The base form is контейнер. After в meaning in, when you are talking about location, it becomes:

• в контейнере

So:

• nominative: контейнер
• prepositional: в контейнере

Russian has no articles.

So мясо can mean:

• meat
• the meat
• some meat

The exact meaning depends on context.

In this sentence, English might translate it as The marinated meat is already in the container, but Russian does not need a separate word for the.

Yes, it is a normal and natural phrase.

Russian often uses participles like this in front of nouns, especially in written language and everyday speech when the form is common and easy to understand.

So замаринованное мясо is perfectly natural for marinated meat.

Yes. In Russian, мясо is grammatically a singular noun.

That is why the verb is singular:

• мясо лежит

And the modifier is singular neuter:

• замаринованное мясо

This is normal for mass nouns in Russian.

The sentence is:

Замаринованное мясо уже лежит в контейнере.

A simple breakdown is:

• Замаринованное мясо = subject
• уже = already
• лежит = lies / is lying
• в контейнере = in the container

So the structure is roughly:

[Subject] + [time/adverb] + [verb] + [place]

This is a very natural Russian order.

Without уже, it becomes:

Замаринованное мясо лежит в контейнере.

That simply means The marinated meat is in the container.

Adding уже gives the idea that this is already the case, often implying:

• the action was completed earlier than expected, or
• this is the current stage of preparation

So уже adds useful context, not just extra information.

A learner may find these helpful:

• замаринованное
• мясо
• уже
• лежит
• контейнере

Stress matters in Russian pronunciation, so it is good to learn words together with stress.

Yes, it can.

Because of уже, the sentence may imply:

• the meat has already been placed in the container, or
• by now, the marinated meat is there

It does not necessarily mean it has been there for a long time, only that the state is now true.

In Russian, the verb to be is normally omitted in the present tense when it would just mean is / am / are.

So Russian says:

• мясо вкусное = the meat is tasty

But in your sentence, Russian is not using a hidden is. Instead, it uses the full lexical verb лежит = is lying.

So the sentence is not missing anything; it is complete as it is.