alto/ˈæl.toʊ/名词女低音（歌手）；男童低音（歌手）Her beautiful alto lends elegance to these well-known tunes.她美妙的女低音为这些著名曲目增添了优雅。/ˈæl.toʊ/形容词（乐器）中音的an alto saxophone/flute中音萨克斯管／长笛想跟读，去练习
