harping

动词 harp:

1. come back to
   同义词：harp, dwell
2. play the harp
   同义词：harp

1. Let's talk of something else. You are always harping on this subject.
   我们谈谈别的东西吧！你老是谈这个问题。
2. She's always harping on my faults.
   她总是唠唠叨叨地谈我的过失。