羽毛

Only fewer dead fibrocytes could be seen.

SIS内残留少量已经死亡的纤维细胞。

People can find the historical path of the development of polyphony music from the Mass, motet and other forms of the sacred music.

我们可以从弥撒曲，经文歌等宗教音乐形式中清晰地看到复调发展的历史轨迹。