dwell on/upon

1. 老是想着；停留在；沉湎于
   He likes to dwell on details, while I look at things from a broad perspective.

   他喜欢沉湎于细节，我则大处着眼。

   You should not dwell too much on your past failures.

   你不应该老是想着过去的失败。

2. 详细论述
   She did not dwell on the details of the matter.

   她没有多讲事情的细节。