Revisamos el pespunte y el hilván.

Revisamos is the first person plural form of revisar, so it means we check / we inspect / we review.

In this sentence, the subject nosotros is not written because Spanish often drops subject pronouns when the verb ending already shows who is doing the action.

So:

• Revisamos = We check / inspect / review
• Nosotros revisamos would also be correct, but nosotros is usually unnecessary unless you want emphasis.

It can mean either one, depending on context.

Revisamos has the same form in:

• the present tense: we review / we check
• the preterite: we reviewed / we checked

So on its own, Revisamos el pespunte y el hilván could mean:

• We review/check the backstitch and the basting stitch
• We reviewed/checked the backstitch and the basting stitch

Usually the surrounding context tells you which one is meant.

In Spanish, it is very normal to repeat the article before each noun when listing items.

So:

• el pespunte y el hilván

sounds natural and clear.

You may sometimes see a single article with coordinated nouns, but with two separate concrete things, repeating the article is very common. It helps mark each noun clearly as its own item.

For a learner, it is safest to follow the pattern used here.

These are both sewing terms, but they refer to different kinds of stitching.

• pespunte usually refers to a regular finished stitch or topstitch/backstitch-type seam, something more permanent
• hilván refers to a temporary basting stitch, used to hold fabric in place before final sewing

So the sentence is talking about checking two different kinds of stitching.

In standard Spanish pronunciation:

• the h is silent
• the stress falls on the last syllable because of the accent mark

So it sounds roughly like:

• eel-VAHN

A more Spanish-like pronunciation would be close to eel-BAN, since Spanish v and b are pronounced very similarly.

The accent mark shows that the stress falls on the last syllable:

• hil-VÁN

Without the accent mark, a word ending in -n would normally be stressed on the second-to-last syllable in Spanish.

So the written accent is needed to show the unusual stress pattern.

Yes. Revisar is a flexible verb, and its best translation depends on context.

It can mean things like:

• to check
• to inspect
• to examine
• to review

In a sewing context, check or inspect often sounds most natural in English.

So in this sentence, revisamos is probably closer to we check or we inspect than to a school-style we review.

You usually would not say it that way in normal Spanish.

With specific countable nouns like these, Spanish generally prefers the article:

• Revisamos el pespunte y el hilván

Leaving out the articles can sound incomplete or unnatural unless you are using a very special style, such as notes, headings, or very compressed technical language.

Yes. Y is the normal Spanish word for and.

So:

• el pespunte y el hilván = the backstitch/topstitch and the basting stitch

A useful extra point: y changes to e before words that begin with an i sound, but that does not happen here because hilván begins with a silent h followed by i? Actually, this is a good special case: because hilván is pronounced with an i sound at the beginning, Spanish would normally use e before it in careful usage.

So many speakers would prefer:

• el pespunte e hilván

However, because an article is present before hilván (el hilván), the conjunction stays y:

• el pespunte y el hilván

That is completely normal.

Spanish is a pro-drop language, which means subject pronouns are often omitted when the verb ending already makes the subject clear.

Since revisamos already tells you the subject is we, adding nosotros is optional.

Compare:

• Revisamos el pespunte y el hilván.
• Nosotros revisamos el pespunte y el hilván.

Both are correct, but the version without nosotros is more natural unless you want emphasis or contrast.