simjieo bogwanso apedo jureul seosseo.

심지어 means even.

It adds the idea that the speaker finds this surprising, extreme, or more than expected. So the sentence is not just saying there was a line in front of the storage area; it is saying:

• there were lines in various places, and
• even in front of the storage area, there was a line.

So 심지어 often introduces the most unexpected example.

Yes, they overlap in meaning, but they are often used together naturally.

• 심지어 = even, as a sentence-level adverb
• 도 = also/even, attached to the noun or phrase it emphasizes

In 보관소 앞에도:

• 앞에 = in front of
• 도 = too / even there

So the sentence emphasizes the surprise in two ways:

• 심지어 sets up the surprising example
• 도 marks that place too as included

This combination is very common and sounds natural. It is similar to English sentences like:

• There were lines everywhere. There was even a line in front of the storage area too.

In smoother English we might not always translate both separately, but in Korean it works well.

보관소 means a storage place, checkroom, luggage storage, or cloakroom, depending on context.

It is made from:

• 보관 = storage, keeping something safe
• 소 = place, office, station

So 보관소 앞 means in front of the storage area/checkroom.

The exact English translation depends on the situation:

• at a museum or event: checkroom / cloakroom
• at a station: luggage storage
• in a building: storage room area

Because 앞에 means in front of, and 도 is added to that whole location phrase.

Breakdown:

• 보관소 = storage area
• 앞 = front
• -에 = at/in/on/to a place
• -도 = also/even

So:

• 보관소 앞에 = in front of the storage area
• 보관소 앞에도 = even in front of the storage area / in front of the storage area too

The 도 attaches after the location particle 에, which is very common.

Examples:

• 집에도 갔어 = I went home too.
• 문 앞에도 사람이 있었어 = There were people even in front of the door.

This is because 줄을 서다 is a fixed Korean expression meaning to stand in line or to line up.

Even though in English line is not the object of stand, Korean treats it as a set expression:

• 줄 = line
• 줄을 서다 = to stand in a line / to line up

So 줄을 섰어 means:

• stood in line
• formed a line
• sometimes more naturally in English: there was a line

This is one of those expressions that learners usually just memorize as a chunk: 줄을 서다.

Examples:

• 사람들이 줄을 섰어. = People lined up.
• 매표소 앞에 줄을 섰어. = They lined up in front of the ticket booth.

Yes. In natural English, that is often the best translation.

Literally, 줄을 섰어 is closer to lined up or stood in line, but Korean often focuses less on whether you translate it actively or as a situation.

So depending on context, this sentence could be understood as:

• People even lined up in front of the storage area.
• There was even a line in front of the storage area.

If the subject is omitted, Korean leaves it to context. English often chooses whichever sounds most natural.

The subject is omitted because Korean often leaves out subjects when they are understood from context.

So the sentence does not explicitly say:

• people
• everyone
• visitors
• we

But the listener can usually infer it.

Depending on context, it could mean:

• People even lined up in front of the storage area.
• There was even a line in front of the storage area.
• We even had to line up in front of the storage area.

This kind of omission is extremely common in Korean.

섰어 is the correct past tense form of 서다.

Conjugation:

• dictionary form: 서다 = to stand
• stem used here: 서-
• past: 섰어

This comes from a contraction process in Korean verb conjugation. You do not say 서었어 in standard modern Korean.

So you should learn it as:

• 서다
• 서
• 섰어
• 섰어요
• 섰습니다

Example:

• 거기 서 있어. = Stand there. / Be standing there.
• 거기 줄을 섰어. = They lined up there.

It is pronounced roughly like seo-sseo.

More precisely:

• 섰어 sounds like [서써]

The final ㅆ affects the next syllable, so it sounds tense at the start of 써.

So it is not pronounced slowly as separate blocks like 섣-어. It flows more like:

• 서써

섰어 is informal, plain speech.

It is natural when speaking:

• to friends
• to younger people
• in casual storytelling
• in text messages or relaxed conversation

More polite versions are:

• 심지어 보관소 앞에도 줄을 섰어요. = polite
• 심지어 보관소 앞에도 줄을 섰습니다. = formal

So the original sentence sounds casual, like someone telling a friend about a crowded situation.

Usually 심지어 comes before the surprising element it highlights, and sentence-initial position is very common.

So this is very natural:

• 심지어 보관소 앞에도 줄을 섰어.

You may also see it closer to the emphasized phrase in some sentences, but sentence-initial placement is the safest and most common for learners.

The current order clearly sets up:

• What I’m about to say is surprising: even in front of the storage area...

So for this sentence, the given placement is very natural.

Yes. They are related, but not identical.

• 심지어 = even, used as an adverb for emphasis
• -도 = also/even, attached to a noun or phrase
• -까지 = up to, as far as, even
• -조차 = even, often with a stronger sense of surprise or negativity
• -마저 = even, often with a nuance like even that too, sometimes in disappointing situations

In this sentence, 심지어 ... 도 is a very natural and neutral way to say even.

If you changed it, the nuance could become stronger or slightly different. For example:

• 보관소 앞까지 줄을 섰어
  = The line extended all the way to the storage area.

That is actually a different meaning: not even there, but up to there.

So 심지어 보관소 앞에도 줄을 섰어 means:

• there was even a line there too

while 보관소 앞까지 줄을 섰어 means:

• the line stretched all the way to in front of the storage area

Those are quite different.