expression, adverb
among them; especially; above all
Refers back to a group or range of things and singles out something as especially notable. Similar to 中でも, and often a little written or rhetorical in tone.
See also: 中でも (なかでも)
日本には有名な祭りが多いが、中にも祇園祭はよく知られている。
Japan has many famous festivals, but among them the Gion Festival is especially well known.
expression, adverb
at the same time; amid; with both qualities
Often used in patterns like Xの中にもYがある or Yが感じられる, showing that another feeling or quality exists within the same situation, sometimes in contrast. It is not a general-purpose replacement for 同時に.
彼の表情には、うれしさの中にも寂しさがあった。
In his expression, there was sadness even amid his happiness.