adv.
无疑地

[ adv ]
in an obvious and provable manner
<adv.all>
his documentary sources are demonstrably wrong

Incontrovertible \In*con`tro*ver"ti*ble\, a.
Not controvertible; too clear or certain to admit of dispute;
indisputable. --Sir T. Browne. --
{In*con`tro*ver"ti*ble*ness}, n. -- {In*con`tro*ver"ti*bly},
adv.