alto
UK ['æl.təʊ] US [-toʊ] noun countable (plural altos)
■(a woman with) a low adult female singing voice or (a boy with) the lowest boys' singing voice 女低音（歌手）；男童低音（歌手）•She began by singing soprano, then changed to alto.她开始时唱女高音，后来改唱女低音。
UK ['æl.təʊ] US [-toʊ] adjective
■describes a musical instrument which is of a size and range between soprano and tenor （乐器）中音的•an alto saxophone/flute中音萨克斯风／长笛 |