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今天我们要学的词是 step up. To step up 有加强的意思。Japan and Russia agreed to step up work towards resolving their longstanding territorial disputes. 日本和俄罗斯一致同意，要加强努力，设法解决两国间长期存在的领土争端。Southeast Asian countries have pledged to step up efforts to end tuberculosis by 2030. 东南亚国家保证，要加强力度，努力在2030年以前做到根除肺结核病。好的，我们今天学习的词是 step up, step up, step up...
