He'd played the euphonium during our last summer tour.

他在我们巡演的最后一个夏季中演奏的小低音号。

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.

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。