If you are sceptical about something, you have doubts about it. 表示怀疑的
adjective [原级] 不相信的,持怀疑态度的;(哲)怀疑论的,不可知论的
If you're still skeptical about exercising, we can only ask you to trust us and give it a try. 如果你仍对锻炼持怀疑态度,我们只能请你相信我们,试一试。
后缀: al
【adjective】 表示具有某种性质的 - indicating pertaining to or characterized by
原词: skeptical
是通过后缀 【al】 构成的派生词