sceptical

形容词 sceptical:

1. marked by or given to doubt
   同义词：doubting, questioning, skeptical
2. denying or questioning the tenets of especially a religion
   同义词：disbelieving, skeptical, unbelieving

1. Mary is sceptical about the solution.
   玛丽对这个解决办法表示怀疑。
2. My assurances don't satisfy him: he's still sceptical.
   我说的确确实实他都不信，仍有疑虑。