nag

The town is full of horses no one wants - some of them perfectly healthy, but many of them starving, broken-down nags.

这个小镇充满了没有人想要的马，其中一些完全健康，但有许多饿得要死、破旧不堪。

I'm always nagging him about his diet.

我总是对他的饮食提出批评。