[, ]a situation in which sth improves or increases over a period of time好转;转机◆an upturn in trade贸易出现转机◆The group's recent sales upturn may not last.集团最近的销售情况好转不会维持太久。OPPdownturn ⨁a dramatic / gradual / sharp / slight / sustained upturn戏剧性的/逐步的/急剧的/略微的/持续的好转