We are naturally skeptical of the unknown and, of course, there is always a chance we might not be very good at it, or even worse, might look silly while trying.

我们对于未知事物有天然的怀疑，而且，我们当然可能对其并不擅长，或者更糟的是，在尝试时洋相百出。

youdao

Of course not, don't be silly.

当然不是，别傻了。

youdao

Of course they're shallow and superficial, a little silly and not too bright.

当然，他们是浅薄无知的，还有点傻而且不太聪明。

youdao

Not you, of course, but people do say silly things, and you too have a family, don't you?

ECONOMIST: A matter of give and take

Sure, unless of course, those contract were for rights to the "iPhone, " not the "iPhone 3G" you silly lawyers.

ENGADGET: Vodafone to have exclusive rights to 3G iPhone in Q1? Mobile