原文"Storm" means "When you cast this spell, copy it for each other spell that was cast before it this turn. If the spell has any targets, you may choose new targets for any of the copies."
原文The copies of a spell with storm created by its storm ability are put directly onto the stack. They aren't cast and won't be counted by other spells with storm cast later in the turn.
原文A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.
原文The triggered ability that creates the copies can itself be countered by anything that can counter a triggered ability. If it is countered, no copies will be put onto the stack.