"How shattered she is! How they wail! How Moab turns her back in shame! Moab has become an object of ridicule, an object of horror to all those around her."
NIV
How it is broken down! How they wail! How Moab has turned his back in shame! So Moab has become [an object of] a derision and a [horrifying] terror to all who are round about him.
AMP
They shall howl, saying, How is it broken down! how hath Moab turned the back with shame! so shall Moab be a derision and a dismaying to all them about him.
KJV