What does 展开 (zhǎnkāi) mean in English?

Card 77PCR Level 6577/82
CARD77
PROGRESS94%
展开
展開
zhǎnkāi
to unfold, to carry out, to be in full swing
Click to reveal
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Reveal: Click/Space/Enter/↑↓/w/s/j/k•Navigate: ←→/h/l/a/d