ineffable /ɪnˈɛfəbəl/

• 1. 

  ADJ You use ineffable to say that something is so great or extreme that it cannot be described in words. 不可言喻的 [正式] [usu ADJ n]

  例：

  ...the ineffable sadness of many of the portraits.

  ...许多肖像流露出的不可言喻的悲伤。

• 2. 

  ineffably ADV [usu ADV adj]

  例：

  ...his ineffably powerful brain.

  ...他那无法形容的超强智慧。