Echipa americană ajunge azi.

Because echipa means the team, while echipă means a team.

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

• echipă = a team
• echipa = the team

So Echipa americană ajunge azi. means The American team arrives today.

If you wanted An American team arrives today, you would say:

• O echipă americană ajunge azi.

Because americană has to agree with echipa, which is a feminine singular noun.

In Romanian, adjectives usually agree with the noun in gender and number.

Here:

• echipă = feminine singular
• so the adjective must also be feminine singular: americană

Compare:

• un jucător american = an American player
• o echipă americană = an American team

So american is masculine singular, and americană is feminine singular.

Ajunge is the 3rd person singular present tense of a ajunge.

Here it matches the subject echipa (the team), which is singular.

Basic present-tense forms of a ajunge are:

• eu ajung = I arrive / I reach
• tu ajungi = you arrive
• el/ea ajunge = he/she arrives
• noi ajungem = we arrive
• voi ajungeți = you arrive
• ei/ele ajung = they arrive

So in this sentence, echipa ... ajunge = the team arrives.

No. A ajunge is a very common Romanian verb with several meanings, depending on context.

Some common meanings are:

• to arrive
• to reach
• to get to
• sometimes to be enough

Examples:

• Ajung acasă la șase. = I get home at six.
• Ajunge la gară mâine. = He/She arrives at the station tomorrow.
• Nu ajunge timpul. = There isn’t enough time.

In Echipa americană ajunge azi, the meaning is clearly arrives / gets here today.

Grammatically, it is present tense, but Romanian often uses the present to talk about a scheduled or near-future event, just like English sometimes does.

So ajunge azi can mean something like:

• arrives today
• is arriving today
• will arrive today

The adverb azi makes the time clear, so Romanian does not need a separate future form here.

Azi means today.

Yes, azi and astăzi usually mean the same thing. The difference is mostly one of style and rhythm:

• azi = shorter, very common in everyday speech
• astăzi = also common, sometimes slightly more formal or careful

So both are natural:

• Echipa americană ajunge azi.
• Echipa americană ajunge astăzi.

In Romanian, adjectives often come after the noun.

So:

• echipa americană = the American team

This is the normal order.

English speakers often expect the adjective first, but Romanian usually prefers:

• noun + adjective

You can sometimes find adjectives before the noun, but that usually sounds more literary, emphatic, or stylistically marked. For an ordinary sentence, echipa americană is the natural choice.

Yes. Romanian word order is fairly flexible, although some orders sound more neutral than others.

The most neutral version here is:

• Echipa americană ajunge azi.

But you could also say:

• Azi ajunge echipa americană.
• Echipa americană azi ajunge. — possible, but less natural in ordinary speech

Changing the order usually changes the focus or emphasis, not the basic meaning.

For example:

• Azi ajunge echipa americană. puts more emphasis on today.

A simple approximate pronunciation for an English speaker is:

• eh-KEE-pa ah-meh-ree-KUH-nuh ah-JOON-jeh AH-zee

A few helpful notes:

• ch in Echipa sounds like k here
• ă is a short central vowel, something like a very reduced uh
• j in ajunge sounds like the s in measure
• ge in ajunge sounds like jeh
• z in azi is a true z sound

Stress is roughly:

• eCHIpa
• ameriCAnă
• aJUNge
• Azi

Here is the breakdown:

• Echipa — noun, feminine singular, definite, subject
• americană — adjective, feminine singular, agreeing with echipa
• ajunge — verb, 3rd person singular present
• azi — adverb of time

So the structure is basically:

• subject + adjective + verb + time adverb

Yes, but it is not exactly the same nuance.

• echipa americană = the American team
  This usually means the team is American.
• echipa din America = the team from America
  This focuses more on where the team comes from.

Often they can be similar in meaning, but americană is the more direct and natural adjective here.

Yes. Sosește is another common way to say arrives.

So you could say:

• Echipa americană sosește azi.

Both are correct, but there is a slight nuance:

• a ajunge can also mean to reach / get to
• a sosi is more specifically to arrive

In everyday Romanian, a ajunge is extremely common and natural.

Because Romanian normally uses a postposed definite article: it attaches the article to the end of the noun.

So instead of:

• the team

Romanian says:

• echipa

This is one of the big differences between English and Romanian.

Compare:

• băiat = boy
• băiatul = the boy
• fată = girl
• fata = the girl
• echipă = team
• echipa = the team

That is why Echipa americană already includes the idea of the.