to a point where one is very tired and has no more energy to keep on
to a point where one is very tired and has no more energy to keep on
through the whole life span of a person
a long period of time
to have a long history or past relationship with someone or something
in a way that is very regular or precisely as planned
24시간
보안 팀은 안전을 보장하기 위해 시설을 24시간 순찰합니다.
something that cannot continue to work or make progress without stops or interruptions