idiom > impossible date,since there is no “ mule year”
Contents
In January donkey horse
  Explanation: Unknown years.
lǘ nián mǎ yuè
  I do not know what year - ridiculed language. Said, "One of these years", "Year of the Ox on which"
Translated by Google
No. 3
  Unknown years. Liang Bin, "Red Flag" 29: "Even a little hope, but also in Malaysia at that ass on it?" "Xinhua Digest" 1981, No. 4: "Research studies, research on which to donkeys years!"
Translated by Google
No. 4
  成语发音: lǘ nián mǎ yuè
  成语释疑: 不可知的年月。
  出处:宋·释道原《景德传灯录》卷九:“世界如许广阔不肯出,钻他故纸,驴年出得。”
  示例:严志和听涛他娘说得也有理,又说:“吞了这口气吧!过个庄稼日子,什么也别扑摸了。即便有点希望,又在那个~呢?” ★梁斌《红旗谱》二九
English Expression
  1. n.:  impossible date,since there is no “ mule year”
Thesaurus
god knows how long, Month of Sundays, age