| 词汇 | step up |
| 释义 | step up phrasal verb with step verb [ I + adv/prep ] uk/step/ us/step/ -pp- 在有需要（或有机会）时采取行动 to take action when there is a need or opportunity for it Investors have to step up and assume more responsibility for their assets. 投资者必须采取行动，为他们的投资承担更多责任。 step something up phrasal verb with step verb [ I + adv/prep ] uk/step/ us/step/ -pp- 增加（尺寸或数量）；加快（进程）的速度 to increase the size, amount, or speed of a process that is intended to achieve something The police are stepping up their efforts to fight crime. 警方正在加大打击犯罪活动的力度。 Security has been stepped up at the airport. 机场加强了安全措施。 |
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