unimaginable /ˌʌnɪˈmædʒɪnəbəl/

• 1. 

  ADJ If you describe something as unimaginable, you are emphasizing that it is difficult to imagine or understand well, because it is not part of people's normal experience. 难以想像的 [强调]

  例：

  The scale of the fighting is almost unimaginable.

  战斗的规模几乎难以想像。

• 2. 

  unimaginably ADV 难以想像地 [ADV adj]

  例：

  Conditions in prisons out there are unimaginably bad.

  那里各监狱的条件难以想像地恶劣。