老大难的英文

• long-standing, big and difficult (problem) 短语和例子
  老大难单位 unit long considered a tough nut to crack; unit known for its difficult problems long regarded as insoluble; a unit with serious and long-standing problems; 老大难问题 question which has long defied solution; problems which have been described as long-standing, big and difficult; a knotty problem of long-standing

• 老大难单位:    unit known for its difficult problems long regarded as insoluble
• 老大难问题:    a knotty problem of long standing; hard nut to crack
• 大难:    catastrophe; disaster 遭此大难 suffer from such a disastrous calamity
• 老大:    1.[书面语] (年老) old2.(排行第一的人) eldest child3.[方言] (木船上的船夫) master of a sailing vessel4.(很) greatly; very 心里老大不高兴 feel very annoyed
• 大难题:    hang-up

例句与用法

1. Drought and soil erosion had long been a major problem .
   干旱和水土流失一直是个老大难问题。
2. You are a difficult case .
   你是个老大难问题。
3. A bigger , though much harder , prize will be immigration
   另一个更为艰苦卓绝的"老大难“问题当属移民政策了。
4. But composition teaching is perhaps the " hard nut to crack " in chinese teaching
   而作文教学恐怕又是语文教学工作中的一个‘老大难’ 。
5. Jump automobile at bridge end in soft clay area is a difficult problem of highway building over the years
   软土路段桥头跳车是公路建设中的一个老大难问题。

其他语言

老大难的日语：長い間解決されていない,大きくて難しい問題.（かねてから）懸案になっている大問題. 老大难单位／問題が山積している部門.
老大难的韩语：[명사] (오랫동안 해결되지 않은) 난제(難題). 골칫거리. 문젯거리. 老大难问题; 골칫거리 문제 这个班是全校有名的老大难班级; 이 반은 전교에서 유명한 문젯거리 학급이다 感谢你们帮助我们解决了生产上的老大难; 저희들이 생산에 있어서의 난제를 해결하도록 도와주신 여러분들께 감사드립니다
老大难的俄语：[lǎodànán] наболевший вопрос
老大难什么意思：lǎo dà nán 形容问题错综复杂，难于解决：～单位ㄧ～问题ㄧ这个班秩序乱，成绩差，是全校有名的～班级。