疑难问题 Save Sign in to save words Traditional (Taiwan): 疑難問題 yínánwèntí ㄧˊ ㄋㄢˊ ㄨㄣˋ ㄊㄧˊ knotty problem intractable difficulty Character by character 疑(yí)doubt 难(nán)difficult 问(wèn)ask 题(tí)surname Ti A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0