absent-minded

adj.健忘的，心不在焉的

副词 : absent-mindedly ; 名词 : absent-mindedness ;

He grew more absent-minded as he aged.

他随着年龄增长变得更加健忘。

金山词霸

He's very learned but rather absent minded.

他很有学问,可是好忘事.

《简明英汉词典》

The absent minded representative presented a present to me.

心不在焉的代表给我送了一份礼物.

期刊摘选