What does 千万 (qiānwàn) mean in English?

Card 1186HSK Level 21186/2021
CARD1186
PROGRESS59%
千万
千萬
qiānwàn
must; be sure to(Adverb)
Click to reveal
← Previous↑ DeckNext →

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