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

上低音，次中音号一种类似于的铜管乐器，但具有较高的音度和柔美的声音。

A brass wind instrument similar to the but having a somewhat higher pitch and a mellower sound.

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

So, we'll listen to the end of the third presentation of this with the contrapuntal idea dominated by strings, melody, bass, other stuff in the middle and then he will bring in the brass for the final statement of this.

我们听完第三次主题呈现,由对位理念主导的,弦乐组,旋律,低音部,以及中间的东西,然后他会引入铜管乐器,作为最后的陈述

耶鲁公开课 - 聆听音乐课程节选