大相悬殊dà xiāng xuán shū

show a world of difference; be quite different (from); outmatch
❍ 他的反革命感觉是很灵的，较之我们革命队伍里的好些人，……是～的。(《毛泽东选集》 Ⅴ—167) He has a pretty good counter-revolutionary nose and outmatches many in our revolutionary ranks，…/盼到今日完姻，真乐的手舞足蹈，虽有几句傻话，却与病时光景大相悬绝。(《红楼梦》 1270) Beside himself with joy,although he sometimes talked nonsense he behaved quite differ ently from when he was demented.