adj.攻不破的；无争论余地的；无懈可击的
It is unassailable that Edison is a truly genius. 爱迪生是位真正的天才，这是不容置疑的。
Out of this living laboratory itself comes an inner and unassailable conclusion. 在这个活的实验室之外是自然和不可更改的结论。
The theory holds every water and is unassailable. 这理论绝对站得住脚，是无懈可击的。
The article is closely reasoned and the arguments are unassailable. 这篇文章论证周密，无懈可击。
