untenable

1. ADJ An argument, theory, or position that is untenable cannot be defended successfully against criticism or attack. 不堪一擊的 (觀點(diǎn)、理論或立場(chǎng))

This argument is untenable from an intellectual, moral and practical standpoint. 從知識(shí)、道德和現(xiàn)實(shí)的角度來看，這種論點(diǎn)是站不住腳的。