您要查找的是不是：
- 难problem
- 为难make things difficult for
- 难的hardy
- 很难very difficult
- 两难be in a dilemma
- 难过的sorry
- 难看的malformed
- 不难It's no big deal.
- 万事开头难It is the first step that costs troublesome
- 难耐intolerability
- 大难catastrophe
- 很难的helluva
- 不难看出as will be readily seen
- 难解abstrusity
- 覆水难收what is done cannot be undone
- 为难的vexed
- 难理解indigestibility
- 难念的unreadable
- 难熬的provoking
- 难听的scrannel
