baesong gisaga gyeongbisire mulgeoneul matgyeossseupnida.

In this sentence, 배송 기사 means delivery driver or delivery worker.

The word 기사 has several meanings in Korean depending on context, such as:

• driver/chauffeur
• technician/engineer in some job titles
• article/news story
• historically, even knight

Here, because it follows 배송 (delivery/shipping), 기사 clearly means a person whose job is making deliveries.

So:

• 배송 기사 = delivery driver
• 기사 by itself does not always mean driver

Korean often writes many noun combinations with a space, especially when they are still felt as separate words rather than one fully fixed compound.

So:

• 배송 = delivery
• 기사 = driver/worker

Together, 배송 기사 means delivery driver.

In real life, spacing in Korean can sometimes vary more than English learners expect, and native speakers are not always perfectly consistent. But 배송 기사 with a space is normal.

가 is the subject marker.

So:

• 배송 기사 = delivery driver
• 배송 기사가 = the delivery driver (as the subject of the sentence)

It marks who performed the action.

In this sentence, the action is 맡겼습니다 (left/entrusted), so 배송 기사가 tells us that the delivery driver is the one who did that action.

This is a very common question.

Here, 에 marks the destination/target location where something is left.

• 경비실에 물건을 맡겼습니다 = left the item at/with the security office

If you used 에서, it would emphasize the place where an action happens. But with 맡기다, the important idea is often to leave something with someone/somewhere, so 에 sounds natural.

Think of it this way:

• 에 = to, at, into, with a destination-like sense
• 에서 = at/in the place where an action is carried out

With 맡기다, Korean often uses:

• 사람에게 맡기다 = entrust it to a person
• 장소에 맡기다 = leave it at a place / with a place

So 경비실에 is natural because the security office is functioning as the place/person-in-charge receiving the item.

경비실 is the security office, guard office, or guard desk/booth in a building or apartment complex.

It is made of:

• 경비 = security, guarding
• 실 = room/office

In context, it often refers to the place where security staff sit and receive visitors, deliveries, or packages.

So in natural English, depending on context, you might translate it as:

• security office
• guard office
• guard desk
• front security desk

물건 literally means thing, item, or goods/object.

In this sentence, because the subject is a delivery driver, 물건 most naturally refers to a delivery item or package.

So although the literal meaning is broad, the context narrows it down.

Possible natural translations include:

• item
• package
• delivery

So the Korean is somewhat general, but English translation often becomes more specific because that sounds more natural.

Here, 맡기다 means to leave something with someone, to entrust something to someone, or to hand something over for safekeeping/handling.

So:

• 물건을 맡기다 = to leave an item/package with someone

In this sentence, the delivery driver did not simply put the item somewhere. The nuance is that the item was left in the care of the security office.

That is why 맡기다 is a better fit than words like:

• 놓다 = to put/place
• 두다 = to leave/place
• 갖다 놓다 = to bring and put down

맡기다 suggests responsibility is being passed over.

These two are closely related and very useful to learn together.

• 맡다 = to take charge of, to be in charge of, to keep/care for
• 맡기다 = to entrust, to leave something with someone, to have someone take charge of it

So:

• 경비실이 물건을 맡았습니다 = The security office took charge of the item.
• 배송 기사가 경비실에 물건을 맡겼습니다 = The delivery driver left the item with the security office.

A helpful way to remember it:

• 맡다 = receive responsibility
• 맡기다 = give responsibility

을/를 is the object marker.

Here:

• 물건 = item/package
• 물건을 = the item/package (as the thing affected by the verb)

The verb 맡기다 is acting on 물건, so 물건 takes the object marker.

Very roughly:

• 배송 기사가 = the delivery driver (subject)
• 물건을 = the item/package (object)
• 맡겼습니다 = left/entrusted

맡겼습니다 is the past polite formal form of 맡기다.

Breakdown:

• dictionary form: 맡기다
• stem: 맡기-
• past marker: -었-
• polite formal ending: -습니다

When combined, it contracts:

• 맡기었습니다 → 맡겼습니다

So 맡겼습니다 means:

• entrusted
• left (with someone)
• did leave

in a polite formal style.

Great grammar question.

Korean often contracts verb forms when -이/히/리/기 + 어/었 come together.

So:

• 맡기다
• stem 맡기-
• add past -었-
• expected older/full form: 맡기었습니다
• contracted natural form: 맡겼습니다

This contraction is very normal and standard.

You do not need to say the full uncontracted form in everyday Korean.

Yes. 맡겼습니다 is in the formal polite style, often called 합니다체.

This style is common in:

• announcements
• customer service
• business settings
• written notices
• speaking politely to strangers

So the sentence sounds appropriate for a delivery notice or message.

Less formal versions would be:

• 배송 기사가 경비실에 물건을 맡겼어요. = polite but less formal
• 배송 기사가 경비실에 물건 맡겼어. = casual

Yes. Korean word order is more flexible than English because particles show each word’s role.

The basic order here is:

• 배송 기사가 경비실에 물건을 맡겼습니다.

But you could also hear:

• 배송 기사가 물건을 경비실에 맡겼습니다.
• 경비실에 배송 기사가 물건을 맡겼습니다.
  (less neutral; this gives more focus to 경비실에)

As long as the particles stay there, the meaning usually remains clear. However, word order can affect emphasis and what sounds most natural in context.

The most neutral English-like order is often: [subject] [place/target] [object] [verb] or [subject] [object] [place/target] [verb].

Yes, but the meaning and tone shift slightly.

Examples:

• 경비원한테 물건을 맡겼습니다. = left the item with the security guard
• 경비원에게 물건을 맡겼습니다. = same, a bit more formal/written
• 경비원께 물건을 맡겼습니다. = honorific; used when showing respect

But in your sentence, the item was left with the security office as a place/institution, not specifically one guard, so 경비실에 is natural.

So:

• 경비실에 맡기다 = leave it at the security office
• 경비원에게 맡기다 = leave it with the security guard

Both are possible, but they focus on different receivers.

A few natural translations are:

• The delivery driver left the package at the security office.
• The delivery driver left the item with the security office.
• The delivery driver dropped off the package at the guard office.

If this appeared in a delivery notification, English would often prefer package rather than the more literal item, because that sounds more natural in context.

Yes, a little.

The Korean verb 맡기다 implies more than just leave. It suggests:

• the item was left in someone’s care
• someone there is now responsible for it
• it was not just abandoned or casually set down

So a fuller sense is:

• left the package with the security office
• entrusted the package to the security office

Simple left the package is understandable, but it misses that important nuance of handing it over for safekeeping or receipt.