Music 【乐】
mass noun
1- (especially in opera and oratorio) a style of vocal performance more melodic than recitative but less formal than an aria（尤指歌剧和清唱剧中的）咏叙调。
1.1
- count noun(pl. -os) a passage in this style咏叙调风格的段落。
- in such a style or manner咏叙调的（地）。
词源
Italian， from ARIA.