harp on sth

• 唠唠叨叨地讲

harp on sth的用法和样例：

例句

1. He always drones on about his problems.
   他总是唠唠叨叨地诉说自己的麻烦。
2. His mother kept on chivvying him to get his hair cut.
   他母亲一直唠唠叨叨地催他去理发。