走上,走进;提高,增加
step up v 1: increase in extent or intensity; "The Allies escalated the bombing" [syn: {escalate}, {intensify}] [ant: {de-escalate}] 2: speed up; "let's rev up production" [syn: {rev up}] 3: make oneself visible; take action; "Young people should step to the fore and help their peers" [syn: {come to the fore}, {step forward}, {come forward}, {step to the fore}, {come out}]