A sublime chord‘s caster level for both her sublime chord spells and the spells she gains from other arcane spellcasting classes is determined by adding her sublime chord level to her level in another arcane spellcasting class. If she had more than one arcane spellcasting class before becoming a sublime chord, she must choose to which class to add her sublime chord levels for the purpose of determining her sublime chord spellcaster level.
明显翻译错误,“adding her sublime chord level to her level in another arcane spellcasting class” 超凡之弦的施法者等级是超凡之弦的职业等级加上“另一个”奥术施法职业施法者等级的总和,并不是所有其他施法职业。所以后一句就顺理成章的解释了有多个奥术施法者职业就只能选一个。