前任predecessor; former wife/husband/partner
前夕eve; the moment before something is going to happen
前无古人without parallel in history
前沿forward position; leading edge
千军万马thousands upon thousands of men and horses―a mighty force
千钧一发be in an extremely precarious situation
启蒙impart basic knowledge; popularize new knowledge to deliver people from fatuity and superstition
奇花异草exotic flowers and rare herbs
恰到好处just right for the purpose
棋chess or any board game; chess piece
欠条a bill signed in acknowledgement of debt
气派dignified air; of impressive appearance
气魄daring and energy; imposing manner
潜移默化influence character by environment
牵头be the first to do something; act as go-between
签sign; make brief comments on a document
起伏rise and fall; ups and downs