absent minded

I often do absent-minded things, particularly when I'm worried.

我常做些心不在焉的事，尤其是在我焦虑不安时。

柯林斯例句

Carol was absent-minded and a little slow on the uptake.

卡萝尔心不在焉，反应有点迟钝。

In his later life he became even more absent-minded.

他晚年变得愈加健忘了。