long-standing problem;big and difficult problem;lasting,complex and hard-to-solve problem是什么意思


中文翻译"老大难" 问题

网络释义

1)long-standing problem;big and difficult problem;lasting,complex and hard-to-solve problem,"老大难" 问题2)problems,问题3)issues,问题4)problem,问题5)issue,问题6)Question,问题7)issue,“问题”8)qu.,问题9)Benard problem Benard,问题10)Q Question,问题

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