它听起来不太像是低音号，因为它其实会在乐器更高的音域演奏，但它确实是低音号。

It doesn't sound much like a tuba because it's actually playing in the higher register of the instrument, but it is a tuba.

youdao

现在在演奏的乐器是低音号，一种低音铜管乐器。

Now the instrument that is playing is a low tuba, a low brass instrument.

youdao

几周前，马克斯对于他妈妈和我对他选择小低音号作为他大学铜管乐器小型合奏团的乐器的解释感到很吃惊。

Weeks earlier, Marcus had amazed his mother and me by explaining that he'd chosen the euphonium, a smaller relative of the tuba, as his instrument in his college brass ensemble.

youdao

Now the instrument is--that is--playing is a low tuba, a low brass instrument.

现在在演奏的乐器,是低音号,一种低音铜管乐器

耶鲁公开课 - 聆听音乐课程节选