1)
Why does the verse discuss revealing her?
1.
Radak: Because she was compared to a Zonah, her destruction is compared to the disgrace of a Zonah.
2)
What are "Shulayich"?
1.
Rashi: The bottom of a woman's garments. Malbim - the bottom is dirty. I will reveal them on your face, and show nations that they were enticed via your Zenus.
3)
What is "Marech"?
1.
Rashi: Your being revealed. This is like "Eryah Voshes" (Michah 1:11). Radak, Malbim - it is like Ervasech.
4)
Why does it add "u'Mamlachos Kelonech"?
1.
Malbim: Kingdoms that were enticed via witchcraft, I will show to them your disgrace.