doubtful about a particular thing
词根：scope = 看；观察；检查
I was very skeptical at first.
我开始时很怀疑。
But some observers are skeptical.
但是观察家们持怀疑态度。
But gamers were skeptical.
但是玩家还有怀疑。
Some analysts are skeptical.
一些分析师如是质疑。
Of course, some people are skeptical.
当然，某些人是抱怀疑态度的。