sceptical
adj. 持怀疑态度的，不相信的；（哲）怀疑论的，不可知论的
例句
The public remain sceptical of these claims.
公众对这些说法仍持怀疑态度。
《牛津词典》
I am sceptical about his chances of winning.
我怀疑他取胜的可能性。
He is very sceptical about the value of rote learning.
他十分怀疑死记硬背学习的价值。
《柯林斯英汉双解大词典》
