对
... apart from 除……之外;除...外;除去 dubious about 对...怀疑 up front 预先 ...
我对这整个想法持怀疑态度。
My parents were a bit dubious about it all at first but we soon convinced them.起初我父母亲对此尚心存疑虑,但很快我们便说服了他们。
I am dubious about online video sites' business models.我对在线视频网站的商业模式心存疑虑。