What does 上诉 (shàngsù) mean in English?

Card 2229HSK Level 42229/3571
CARD2229
PROGRESS62%
上诉
上訴
shàngsù
appeal(Verb)
Click to reveal
← Previous↑ DeckNext →

Reveal: Click/Space/Enter/↑↓/w/s/j/k•Navigate: ←→/h/l/a/d