What does 循序渐进 (xún xù jiàn jìn) mean in English?

Card 2983HSK Level 42983/3571
CARD2983
PROGRESS84%
循序渐进
循序漸進
xún xù jiàn jìn
follow in order and advance step by step

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