step up
参考词典中step up的常规释义：
基本释义
- v.走近,逐步增加,提升,提高
上阵，上场
英英解释
3个动词解释
- increase in extent or intensity
[同] escalate, intensify, step up
[反] de-escalate, step down, weaken
[例]- The Allies escalated the bombing
- speed up
[同] rev up, step up
[例]- let's rev up production
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- make oneself visible; take action
[同] come forward, come out, come to the fore, step forward, step to the fore, step up
[例]- Young people should step to the fore and help their peers
less ...点击查看……- increase in extent or intensity
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