0 used to mean the thing, situation, or idea that has already been talked about -- 그것
1 used before some adjectives, nouns, or verbs to introduce an opinion or description of a situation -- 상황 설명이나 의견을 말할 때 쓴다
2 used with a verb in sentences giving the time, date, weather, or distances -- 시간, 날짜, 날씨, 거리등을 말할때 쓴다
3 used to say the name of a person or thing when the person you are speaking to does not know -- 사람을 가리켜 쓰인다
4 the use of computers and other electronic equipment to keep and send information -- 아이티, 정보 통신 기술
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
길이 아무리 길어도 차근차근 완주할 수 있고, 발자국을 표시하지 않으면 아무리 길이 짧아도 완주할 수 없습니다.