Question

一言难尽[yī yán nán jìn]1.■It would take too long to tell that in full.; difficult to embody in a single sentence; difficult to put in a nutshell; hard to explain all in just a few words; impossible to be expressed in a few words; It's a long story (to tell).; It's hard to explain in a few words.; not to be expressed in a few words; That is a long, long story.; That would entail a long explanation.