1)
Did the Kushim fall again after they were stricken?
1.
Malbim: Yes. After they fled, many of them fell.
2)
What is the meaning of "l'Ein Lahem Michyah"?
1.
Gra: There is not one healthy place in the body. This is like "u'Michyas Basar Chai" (Vayikra 13:10).
2.
Malbim: They could not sustain themselves, for they had no vitality to go. Their vitality departed, for Hashem struck them.
