The peasants are singing about their happy life.

农民他美好的生活。

The company's salesman has been caroling its glories for many years.

公司的推销员多少年来都公司的辉煌成就。

The names of many heroes are celebrated by the poets.

许多英雄的名字为诗人所。

They sang of his brave deeds.

他他的英勇行为。

12“Worthy is the Lamb” –Now the angels sing the song of praise. Why should the unfallen angels sing about the Lamb?

12「羔羊是配得」──现天使唱赞美之，甚麽未曾堕落的天使；羔羊呢？

Plainchant or plainsong, the traditional monodic chant of the Catholic Church, still uses a four-line stave, and in earlier music the number of lines used varied.

素乐或素——教堂传统单，依旧采用四线谱，乐中，线的数目各不相同。

Noteheads may be black (a circular or oval shape filled in) or white and are used on the staff to indicate pitch. The shape of noteheads has differed historically, as in plainchant.

符头可以是黑色的（圆形或卵形）或白色的，用五线谱上以表明高。符头的形状历史上有很多种，比如单中。