Мастер принёс тепловизор.

Not usually in the English sense of master.

In everyday Russian, мастер often means a repairman, technician, specialist, or workman, depending on context. So in a sentence like Мастер принёс тепловизор, it could mean something like:

• The technician brought a thermal camera
• The repairman brought a thermal imager

The exact English word depends on the situation.

• мастер is in the nominative singular because it is the subject.
• тепловизор is in the accusative singular because it is the direct object.

So the structure is:

• Мастер = the person doing the action
• принёс = brought
• тепловизор = the thing brought

Because it is a masculine inanimate noun.

In Russian, masculine inanimate nouns usually have:

• nominative singular = same form
• accusative singular = same form

So:

• тепловизор = nominative
• тепловизор = accusative

If the noun were animate, the accusative would often look like the genitive instead.

The infinitive is принести.

So:

• принести = to bring
• принёс = brought (masculine singular past)

This verb is a little irregular, so the past tense does not look exactly like the infinitive stem.

Related forms:

• принесла = she brought
• принесло = it brought
• принесли = they brought

Because принёс is perfective.

Russian aspect matters a lot:

• принести / принёс = perfective → a completed action, brought
• приносить / приносил = imperfective → was bringing, used to bring, brought on some occasion with focus on process or repetition

So Мастер принёс тепловизор presents the action as a completed event: the technician came and brought it.

This is part of the past-tense form of принести.

Russian past tense agrees with the subject in gender and number:

• принёс = masculine singular
• принесла = feminine singular
• принесло = neuter singular
• принесли = plural

Since мастер is masculine singular, the verb is принёс.

Great question. In Russian, ё is often written as е in normal texts, even though the pronunciation is different.

So you may see:

• принёс — fully marked spelling
• принес — common unmarked spelling

But the pronunciation is still prinyós, not prines.

For learners, it is very helpful to remember the correct form as принёс with ё.

Because Russian has no articles.

So Мастер принёс тепловизор can mean:

• The technician brought a thermal camera
• A technician brought the thermal camera
• The technician brought the thermal camera

Which one sounds best in English depends on context. Russian leaves that to the situation, word order, and broader context.

Yes, it can be changed, because Russian word order is more flexible than English word order.

The neutral order here is:

• Мастер принёс тепловизор.

This is a straightforward subject–verb–object sentence.

But other orders are possible for emphasis, for example:

• Тепловизор принёс мастер. → emphasizes тепловизор
• Принёс мастер тепловизор. → sounds more marked, often more contextual or stylistic

The meaning stays broadly the same because the cases show the grammatical roles, but the focus and tone change.

The stress is:

• ма́стер
• принёс
• тепловизо́р

So the sentence is pronounced approximately:

MA-ster pri-NYOS te-plo-vi-ZOR

A few useful notes:

• ё is always stressed
• unstressed vowels are reduced in normal Russian pronunciation
• тепловизор has stress on the last syllable

So getting the stress right is important for sounding natural.