skeptical

怀疑的；怀疑论的，不可知论的adjadj

1 Not all theory that we read in this course is skeptical..我们在这门课中提及的理论不全是怀疑性的。

2 L.M.:Well, I was skeptical myself in the beginning. But these are facts. The findings are very reproducible and we are waiting for confirmation by other labs..大爷：我老人家一开始也是很怀疑的。但是这个是事实。这个发现可以被反复验证，我们正在等待别的实验是的验证。