absent-minded

1. ADJ Someone who is absent-minded forgets things or does not pay attention to what they are doing, often because they are thinking about something else. 心不在焉的

In his later life he became even more absent-minded. 在晚年他变得更加心不在焉了。

2. absent-mindedlyADV 心不在焉地[ADV with v]

Elizabeth absent-mindedly picked a thread from his lapel. 伊丽莎白心不在焉地从他的翻领上拈起了一根线。