Monitorizăm fosfatul și clorul.

Monitorizăm is present tense, 1st person plural of a monitoriza.

So it means we monitor or, depending on context, we are monitoring.

Romanian present tense often covers both:

• we monitor
• we are monitoring

The exact English translation depends on context.

Romanian often drops subject pronouns when they are not needed, because the verb ending already shows who is doing the action.

So:

• Monitorizăm = we monitor / we are monitoring

You could say Noi monitorizăm fosfatul și clorul, but noi is usually added only for:

• emphasis
• contrast
• clarity

For example:

• Noi monitorizăm fosfatul, iar ei monitorizează pH-ul.
  We monitor the phosphate, while they monitor the pH.

The ending -ăm marks 1st person plural (we) for this verb form.

The infinitive is a monitoriza. Its present-tense forms are:

• eu monitorizez = I monitor
• tu monitorizezi = you monitor
• el/ea monitorizează = he/she monitors
• noi monitorizăm = we monitor
• voi monitorizați = you all monitor
• ei/ele monitorizează = they monitor

So -ăm is the part that tells you the subject is we.

The ending -ul is the definite article in Romanian. It means the.

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

So:

• fosfat = phosphate

• fosfatul = the phosphate

• clor = chlorine
• clorul = the chlorine

This is a very important Romanian pattern:

• băiat = boy
• băiatul = the boy
• laborator = laboratory
• laboratorul = the laboratory

Romanian often uses the definite article when talking about something specific, known, or already relevant in the context.

So fosfatul și clorul suggests:

• the phosphate and the chlorine already being discussed
• those specific substances in a test, system, sample, or process

In technical or scientific contexts, Romanian may also use the definite form more naturally where English might use a bare noun.

So even if English sometimes says:

• We monitor phosphate and chlorine

Romanian may prefer:

• Monitorizăm fosfatul și clorul

because the substances are treated as specific monitored parameters.

Because fosfatul and clorul are inanimate direct objects, and Romanian usually does not use pe with those.

The marker pe is mainly used with:

• people
• animate beings
• sometimes highly specific direct objects

For example:

• Văd băiatul. = I see the boy.
• Îl văd pe băiat. = I see the boy.
  Here pe is used because it refers to a person.

But with inanimate things like:

• fosfatul
• clorul

you normally just say:

• Monitorizăm fosfatul și clorul.

Și means and.

It is pronounced roughly like shee.

A few useful pronunciation notes:

• ș sounds like English sh
• i here sounds like ee

So:

• și = shee

The normal, neutral word order here is:

• Monitorizăm fosfatul și clorul.
• verb + object

This is a very natural Romanian sentence.

Romanian word order is somewhat flexible, but changing it usually adds emphasis or sounds more marked.

For example:

• Fosfatul și clorul le monitorizăm.

This puts more emphasis on fosfatul și clorul, something like:

• It’s the phosphate and chlorine that we monitor.

So the original sentence is the best neutral version.

A simple approximate pronunciation is:

moh-nee-toh-ree-ZUHM fohs-FAH-tool sh-ee kloh-ROOL

A few helpful details:

• monitorizăm → stress near the end
• ă is a short neutral vowel, like the a in sofa
• fosfatul = fos-FA-tul
• clorul = CLO-rul
• și = shee

If you want a smoother approximation: monitorizăm fosfatul și clorul
≈ moh-nee-toh-ree-Zuhm fohs-FAH-tool shee KLOH-rul

A monitoriza is a more modern, somewhat technical/formal verb, and it is very common in scientific, medical, administrative, and technical language.

So Monitorizăm fosfatul și clorul sounds perfectly natural in a laboratory, industrial, environmental, or medical context.

In everyday speech, Romanian often has both:

• a more technical verb
• a more everyday alternative

But in this sentence, a monitoriza is exactly the kind of verb you would expect.