If they have to review something that they should have learned a couple of weeks ago, or maybe a couple of years ago, they don't have to be embarrassed and ask their cousin.
만약 그들이 2주 전이나 2년 전에 배웠던 것들을 다시 봐야만 한다면, 난처해 하거나, 사촌에게 물어보지 않아도 됩니다.