bass tuba

例句：

1. 1.The bass tuba is used in many orchestras to add a powerful and emotional sound to the ensemble.
   低音大号在许多管弦乐队中被使用，以给合奏增添一种有力且情感丰富的声音。
2. 2.The bass tuba player was praised for his exceptional tone and technique.
   低音大号演奏家因其卓越的音色和技巧而受到赞扬。
3. 3. The bass tuba is often used in marching bands as a primary instrument, providing a strong rhythmic foundation.
   低音大号常被用于行进乐队中，作为主要乐器，提供强有力的节奏基础。