jeonghwa hwaldongeul gyeou kkeutnaessseupnida.

We only just managed to finish the clean-up activity.

Breakdown of jeonghwa hwaldongeul gyeou kkeutnaessseupnida.

• 끝내다: to finish / to complete
• 정화 활동: the environmental clean-up activity
• 겨우: barely; only just

Questions & Answers about jeonghwa hwaldongeul gyeou kkeutnaessseupnida.

What does 정화 활동 mean?

정화 활동 literally means purification activity or cleanup activity.

• 정화 = purification, cleansing, cleanup
• 활동 = activity

In real use, the exact translation depends on context:

• environmental context: cleanup activity
• water/air treatment context: purification work/activity
• broader official context: sanitation/cleaning activity

So in many everyday contexts, a natural English translation would be the cleanup activity.

Why is there 을 after 활동?

을 is the object marker. It marks 정화 활동 as the thing that was finished.

So:

• 정화 활동을 = the cleanup activity as the object
• 끝냈습니다 = finished / completed

This happens because 끝내다 is a transitive verb, meaning it takes an object.

Compare:

• 활동을 끝냈습니다 = finished the activity
• 활동이 끝났습니다 = the activity ended / was finished

That contrast is very important in Korean.

Why is the verb 끝냈습니다 and not 끝났습니다?