"Hard to understand" • Chinese-English Dictionary
| 疑难 | yí nán | hard to understand / difficult to deal with / knotty / complicated |   |
| 难解 | nán jiě | hard to solve / hard to dispel / hard to understand / hard to undo | |
| 费解 | fèi jiě | to be puzzled / hard to understand / unintelligible / incomprehensible | |
| 难以理解 | nán yǐ lǐ jiě | hard to understand / incomprehensible | |
