I can explain
No puedo explicar la diferencia entre esos dos.
I can't explain the difference between those two.
I can explain it.
I can't explain everything right now.
I can explain.
I can't explain it either.
Ahora no te puedo explicar nada, pero pronto lo entenderás, ¿vale?
I can't explain anything to you right now, but you'll understand soon, okay?
— Y tu mamá también (2001)
No te lo puedo explicar ahora.
I can't explain it to you right now.
I can't explain it well.