thorny

• 棘手问题

  thorny problem

• 不管怎样棘手的问题，总是可以解决的。

  Any problem, no matter how thorny, can be solved in the end.

• 事情异常棘手，简直不知怎么办才好。

  The problem is extremely thorny, one just does not know how best to sort it out.