柯林斯词典double bass /beɪs/ (also double-bass) (double basses) 1. N-VAR A double bass is the largest instrument in the violin family. 低音提琴 返回 double bass剑桥词典the largest musical instrument of the violin family . It plays the lowest line of music in orchestral music and in jazz . 低音提琴 返回 double bass