- (British English cloud cuckoo land)(disapproving)
if you say that somebody is living in la-la land, you mean that they do not understand what a situation is really like, but think it is much better than it is 幻想世界；脱离现实的幻境 Los Angeles or Hollywood, especially with regard to the film and television industry 拉拉土地： 洛杉矶或好莱坞，尤其是在影视业方面
Word Originla-la, reduplication of LA (i.e. Los Angeles).