keep up appearances
US /kiːp ʌp əˈpɪr.ən.sɪz/
UK /kiːp ʌp əˈpɪr.ən.sɪz/

1.
겉모습을 유지하다, 체면을 지키다
to pretend to be happier, less poor, etc., than you really are, because you do not want people to know how bad your real situation is
:
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Despite their financial struggles, they tried to keep up appearances for their children.
재정적인 어려움에도 불구하고, 그들은 아이들을 위해 겉모습을 유지하려고 노력했다.
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She always dresses well to keep up appearances, even when she's feeling down.
그녀는 기분이 안 좋을 때도 겉모습을 유지하기 위해 항상 잘 차려입는다.