המשאבה ממלאת את הצמיג באוויר דרך השסתום.

את is the direct object marker. It does not have a meaning of its own in English, but it tells you that the next noun is the definite direct object of the verb.

So in:

המשאבה ממלאת את הצמיג באוויר דרך השסתום

the phrase את הצמיג means that the tire is what is being filled.

A very common rule:

• use את before a definite direct object
• do not use it before an indefinite direct object

For example:

• ממלאת את הצמיג = fills the tire
• ממלאת צמיג = fills a tire

The prefix ה־ is the Hebrew definite article, equivalent to English the.

In this sentence:

• המשאבה = the pump
• הצמיג = the tire
• השסתום = the valve

So Hebrew usually attaches the directly to the beginning of the noun, instead of writing it as a separate word.

Because המשאבה (the pump) is a feminine singular noun, and the present-tense verb agrees with it.

So:

• ממלא = masculine singular
• ממלאת = feminine singular

Since משאבה is feminine, Hebrew uses:

• המשאבה ממלאת = the pump fills / is filling

This kind of agreement is very important in Hebrew.

Yes. Hebrew present-tense forms often cover both:

• simple present: fills
• present progressive: is filling

So המשאבה ממלאת את הצמיג can mean either:

• the pump fills the tire
• the pump is filling the tire

The exact English translation depends on context.

Because the verb למלא often works like to fill something with something.

So the pattern is:

• למלא את X ב־Y = to fill X with Y

Here:

• את הצמיג = the tire
• באוויר = with air

So the sentence literally follows the structure:

• the pump fills the tire with air through the valve

Even though ב often means in or inside, with this verb it commonly corresponds to English with.

באוויר is made from:

• ב־ = in / with / by
• ה־ = the
• אוויר = air

When ב־ combines with the definite article ה־, they merge into בַּ / בָ in normal spelling without niqqud, written simply as ב attached to the noun.

So:

• באוויר = ב + האוויר = in/with the air

This same thing happens with other prepositions too:

• בבית = in the house
• לילד = to the boy
• מהספר = from the book

Because the two nouns play different roles in the sentence.

• את הצמיג is the direct object: the thing being filled
• דרך השסתום is a prepositional phrase: through the valve

The marker את is only used for definite direct objects. It is not used after prepositions like דרך.

So:

• את הצמיג = direct object
• דרך השסתום = through the valve

דרך means through, via, or by way of, depending on context.

In this sentence, דרך השסתום means:

• through the valve
• or more naturally, via the valve

It describes the route or passage through which the air enters the tire.

The dictionary form is למלא = to fill.

The form ממלאת is the feminine singular present form of that verb.

Useful related forms:

• למלא = to fill
• ממלא = filling / fills (masculine singular)
• ממלאת = filling / fills (feminine singular)
• ממלאים = filling / fill (masculine plural)
• ממלאות = filling / fill (feminine plural)

The sentence uses a very normal, clear word order:

• המשאבה = subject
• ממלאת = verb
• את הצמיג = direct object
• באוויר = with air
• דרך השסתום = through the valve

So the structure is basically:

Subject + Verb + Object + other details

Hebrew word order can be flexible, but this version sounds natural and straightforward.

A common pronunciation guide is:

ha-mash-E-vah me-ma-LET et ha-tsa-MIG be-a-VIR de-rekh ha-shas-TOM

A more standard transliteration would be:

ha-mash'eva memale't et ha-tzamig be'avir derekh ha-shastom

A few notes:

• משאבה = mash'eva
• צמיג = tzamig
• אוויר = avir
• שסתום = shastom

Pronunciation can vary slightly by speaker and accent.

The main changes would be:

1. remove ה־ from the nouns
2. remove את before an indefinite direct object

So a more indefinite version would be:

משאבה ממלאת צמיג באוויר דרך שסתום

That would mean something like:

A pump fills a tire with air through a valve

Compare:

• המשאבה ממלאת את הצמיג = the pump fills the tire
• משאבה ממלאת צמיג = a pump fills a tire

By itself, באוויר can indeed mean in the air in other contexts.

For example:

• הכדור באוויר = the ball is in the air

But in this sentence, because the verb is למלא (to fill), the phrase is understood as with air.

So context tells you how to interpret it:

• with למלא, ב־ often gives the material used to fill something
• here that material is air

So:

• ממלאת את הצמיג באוויר = fills the tire with air