unimaginably
adv. 不能想像地；难以理解地
例句
Conditions in prisons out there are unimaginably bad.
那里各监狱的条件难以想像地恶劣。
《柯林斯英汉双解大词典》
An ice age by mid-century would be unimaginably devastating.
到本世纪中叶，冰河时代的破坏力将难以想象。
What they say is almost unimaginably painful to me.
他们所说的对我来说几乎是无法想象的痛苦。
