keep up appearances 撑场面，保持体面；保持常态
They were very unhappily married but kept up appearances for the sake of their children.
I tried very hard to keep up appearances as I fell further and further into credit card debt.
We must keep up appearances even if it means little sacrifices here and there.
Things may be unpleasant, but we will keep up appearances.
I was determined to keep up appearances by pretending nothing was wrong.