[aunty;granny] 对年老妇女的尊称 [knotty;be hard nut to crack;be long-standing,big and difficult problem] 形容问题很多,积重难返,不易改进的情况 [uneducated person;rough and ready chap] 指缺乏文化教养的人(多用为谦辞) ..
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老大难的解释 [knotty;be hard nut to crack;be long-sta..
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