L'interprete di conferenza traduce a vista il materiale.

Because Italian normally elides lo/la before a vowel.

• l'interprete = the interpreter
• The full article here would be l', not il, because interprete begins with a vowel.

Also, interprete can be masculine or feminine depending on the person:

• l'interprete = the interpreter (male or female)

You often understand the gender from context or from adjectives/articles elsewhere in the sentence.

It can be either masculine or feminine.

Examples:

• l'interprete è bravo = the interpreter is good/skilled (male)
• l'interprete è brava = the interpreter is good/skilled (female)

In your sentence, nothing else marks the gender, so l'interprete is simply the conference interpreter.

Di conferenza means conference in the sense of conference-related or working at conferences.

So:

• interprete di conferenza = conference interpreter

This is a very common Italian structure:

• occhiali da sole = sunglasses
• sala da pranzo = dining room
• interprete di conferenza = conference interpreter

Here, di links the noun interprete to the field or type of work.

Traduce is the 3rd person singular present tense of tradurre (to translate).

Conjugation:

• io traduco = I translate
• tu traduci = you translate
• lui/lei traduce = he/she translates

So:

• L'interprete ... traduce = The interpreter translates / is translating

Notice that tradurre is an irregular verb, so the forms do not all look perfectly regular.

Italian often uses the simple present where English might use either:

• the interpreter translates
• the interpreter is translating

So traduce can describe:

1. a general fact or professional activity, or
2. what is happening now, depending on context.

Without more context, the sentence can sound like a general description of what a conference interpreter does.

A vista is an idiomatic expression. In interpreting/translation contexts, it means at sight or sight translation—that is, translating a written text immediately by reading it.

So:

• tradurre a vista = to do sight translation

This is not a word-for-word phrase you should translate literally in most contexts. It is a set expression.

Because a vista is a fixed expression in Italian. You learn it as a chunk:

• tradurre a vista
• traduzione a vista

Even though a often means to in other contexts, here the whole phrase has a specialized meaning. It is best memorized as a unit rather than analyzed word by word.

That is the normal Italian word order here:

• subject: L'interprete di conferenza
• verb: traduce
• expression: a vista
• direct object: il materiale

Italian word order is often flexible, but this order sounds natural and neutral.

So the structure is basically:

The conference interpreter + translates + at sight + the material

Il materiale is singular.

It usually means the material, the materials, or the text/material provided, depending on context. Italian often uses a singular noun where English might prefer either singular or plural.

So in practice, il materiale could refer to:

• a document
• written material
• source text
• conference papers or handouts collectively

Because il materiale is the direct object of traduce.

• tradurre qualcosa = to translate something

So:

• traduce il materiale = translates the material

No preposition is needed, just as in English you say translate the material, not translate to the material.

Because a vista functions as an adverbial expression describing how the interpreter translates.

It answers the question:

• How does the interpreter translate the material?
• A vista.

So it modifies traduce, not materiale.

Yes, especially because tradurre a vista is a task often associated with interpreters.

A useful distinction is:

• traduttore = translator (usually written translation)
• interprete = interpreter (spoken mediation between languages)

But sight translation is a hybrid activity: the interpreter reads a written text and renders it orally. So interprete di conferenza is perfectly logical here.

Traduce is pronounced roughly tra-DOO-cheh.

The ending -ce in Italian sounds like che in chess, not like English see.

Why it looks different from tradurre:

• infinitive: tradurre
• present tense stem changes in the conjugation:
  • traduco
  • traduci
  • traduce

This is just part of the verb’s irregular pattern, so it is something to memorize through exposure and practice.