柯林斯词典a cappella /ɑː kəˈpɛlə/ 1. ADJ/ADV without instrumental accompaniment 不用乐器伴奏的; 不用乐器伴奏地[music] 返回 a cappella剑桥词典sung by a group of people without any musical instruments (合唱)无乐器伴奏的;团体清唱的 返回 a cappella