Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
정신노동은 종종 육체 노동보다 더 힘들 수 있다.jeongsin nodongeun jongjong yuktche nodongboda deo himdeul su itda.Mental labor can often be more difficult than physical labor.