You create an opaque, immobile, shimmering screen of violet energy. Any spell effect operating on a creature or unattended object that passes through the screen is affected as by a targeted dispel magic at your caster level. Attended items that pass through are not affected by the screen, which is the only way the screen differs from a normal targeted casting of dispel magic—attended items are essentially not targeted by the screen. Make a caster level check (1d20 + 1 per caster level, maximum +10) to dispel spell effects (DC 11 + caster level) or suppress an unattended object's magical properties for 1d4 rounds (DC equal to the item's caster level). Spell effects not operating on objects or unattended creatures cannot pass through the screen. A disintegrate or successful dispel magic removes Otiluke's dispelling screen, while an antimagic field suppresses it.这里的持有和持握原文都是attend，你可以理解为译文笔误
2和3的逻辑很简单，就是把有“生物或无主物品”为目标的法术效果，“被持有物品”为目标的法术效果，以及不属于以上两类的分成三种情况对待，以生物或无主物品的穿过时会被DM，被持有物品不受影响，不属于以上的则无法通过感谢。那么是不是可以理解为，只要声明是对“我的盔甲”甚至“我手上拿的小石子”施放的法术就可以穿过该法术不受影响了？已经射出的箭矢算无主物品吗？引用You create an opaque, immobile, shimmering screen of violet energy. Any spell effect operating on a creature or unattended object that passes through the screen is affected as by a targeted dispel magic at your caster level. Attended items that pass through are not affected by the screen, which is the only way the screen differs from a normal targeted casting of dispel magic—attended items are essentially not targeted by the screen. Make a caster level check (1d20 + 1 per caster level, maximum +10) to dispel spell effects (DC 11 + caster level) or suppress an unattended object's magical properties for 1d4 rounds (DC equal to the item's caster level). Spell effects not operating on objects or unattended creatures cannot pass through the screen. A disintegrate or successful dispel magic removes Otiluke's dispelling screen, while an antimagic field suppresses it.这里的持有和持握原文都是attend，你可以理解为译文笔误
另外UD和构装体都是生物而不是物品，不要弄混了
至于spell effects这个东西嘛，这是个典型的有歧义词汇，它有些时候实际的指代范围仅包括带有“效果：XX”的法术产生出来的“效果”，如一团雾、一面墙、一道射线、一个召唤生物这些——顺便一提，超魔咒使有个臭名昭著的能力就涉及到这个理解差异导致的种种扯皮，视其中哪一方扯赢，这个能力的用法会有极大的差异
但这个法术的情况则显然也可以跟区域法术（带有Area of Effect：XX格式的法术，虽然硬要说的话这里头也带个effect字眼，也可以不太严谨地认为在指代范围内）互动，更头疼的是它也有可能跟目标法术互动——你究竟能不能隔着解咒屏对另一边的生物施展狂笑术或者加速术？要知道，法术导致的buff、debuff和各种加值减值也可以在广义上包含在spell effects里面啊 :em001
总之从上面的几个例子来说，锐耳/鹰眼、云雾都是有Effect：XX格式的法术，能够被阻挡是没有什么疑问的；火球和沉默都有Area of Effect: XX的格式，似乎稍微扩展一下释义也不是不能被阻挡（但这无疑会让这个法术变得过于强大了）；不过按照上面的解释，某还能想到若干个互动起来更让人头疼的法术，并且如果都能互动的话…… :em032
想了想好像也没那么夸张，这法术是个不透明墙，4环的话实体墙都有了也不差一个只挡法术效果线不挡实体的我一直把这个法术理解成那种日系奇幻里面的魔法墙，专门挡魔法的那种
简单来说你的装备和持有物品不会被指定为目标型驱散的目标（但如果你穿过墙，你本身会），所以一支箭上如果带有魔法，你拿着它穿过就不会成为目标，但是射过去会，并且如果它是魔法箭的话在这个过程中可能被压制1d4轮不过魔法弓射出的箭怎么算……