首先，这个魔法不需要维持专注，所以施展完成后不会被打断。
引用:
Sunbeam
Duration: 1 round/level or until all beams are exhausted
引用:
DURATION
Concentration: The spell lasts as long as you concentrate on it. Concentrating to maintain a spell is a standard action that does not provoke attacks of opportunity. Anything that could break your concentration when casting a spell can also break your concentration while you’re maintaining one, causing the spell to end.
这甚至不是需要一个touch类的法术，不能hold在手上，根本不会有“手中的两根”这种概念。
引用:
Touch Spells and Holding the Charge: In most cases, if you don’t discharge a touch spell on the round you cast it, you can hold the charge (postpone the discharge of the spell) indefinitely. You can make touch attacks round after round. If you cast another spell, the touch spell dissipates.
就算是拿在手上的法术，例如治疗轻伤，也不会因为被伤害而结束。
引用:
To cast a spell, you must concentrate. If something interrupts your concentration while you’re casting, you must make a Concentration check or lose the spell.
最接近的法术是招雷术。没听说过招雷术会被伤害打断的。
[
本帖最后由 Gilthanas 于 2008-1-7 08:37 编辑 ]
