bujaejungimyeon hoesu naljjareul meonjeo hwaginhasipsio.

부재중 means absent, not present, or out.

It is made of:

• 부재 = absence
• 중 = in the middle of / during

So literally it is something like in a state of absence. It is very common in notices, delivery messages, office signs, and other formal contexts.

부재중이면 is 부재중 + -(이)면, which means if.

Because 부재중 is treated like a noun-type expression, Korean uses -(이)면 after it:

• 부재중
  • 이면 → 부재중이면

Since 부재중 ends in a consonant, the form is 이면, not just 면.

-(이)면 is a conditional ending meaning if or sometimes when.

So 부재중이면 means:

• if you are absent
• if nobody is present
• if the person is not there

The exact English wording depends on context, but the grammar is simply setting up a condition for the main instruction.

회수 usually means collection, retrieval, recovery, or taking something back.

In this sentence, 회수 날짜 most naturally means the collection date or the pickup date.
The exact nuance depends on what is being collected or retrieved, but the basic idea is that something will be picked up or taken back on a certain date.

를 marks the direct object of the verb.

The verb here is 확인하다, meaning to check or to confirm.
What are you checking? 회수 날짜.

So:

• 회수 날짜를 확인하십시오 = Please check the collection date

If you used 가 instead, the sentence structure and focus would be different, and it would not sound like the normal object of 확인하다.

먼저 means first or before anything else.

It tells the reader that checking the date should happen before other actions. So the sentence is not just saying check the collection date; it is saying check the collection date first.

확인하십시오 uses -십시오, a formal polite imperative ending.

This style is common in:

• public notices
• instructions
• official announcements
• customer guidance

So it sounds more formal and official than:

• 확인하세요 = polite, but less formal
• 확인해 주세요 = please check, softer and more conversational

It comes from the verb 확인하다:

• dictionary form: 확인하다
• verb stem: 확인하-
• formal imperative ending: -십시오

So:

• 확인하- + -십시오 → 확인하십시오

This is a standard way to make a formal command or instruction.

The subject is omitted, which is very normal in Korean.

Depending on context, it could mean:

• if you are absent
• if the recipient is absent
• if nobody is home
• if the resident is not present

Korean often leaves this unstated when the situation makes it obvious.

It can be either, depending on context.

부재중 itself just means being absent / not present. In a delivery or home-related notice, natural English might be if nobody is home. In a more general or formal setting, it might be if you are absent.

So the Korean is slightly broader than any one English translation.

That is the normal Korean word order.

Korean commonly puts the if/when clause first and the main action afterward:

• 부재중이면 = if absent
• 회수 날짜를 먼저 확인하십시오 = first check the collection date

So the sentence structure is very typical: condition first, main instruction second.