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刻苦攻关
meaning in English
storm strongholds in defiance of difficulties; study very hard
Related Words
攻关
攻关成果
技术攻关
攻关精神
攻关项目
科技攻关
攻关计划
科研攻关
科学技术攻关
刻苦
刻苦攻读
刻苦攻读,埋头苦干
刻苦没有错
刻苦耐劳
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