Along with our song difficulty increase, the song musical part obvious discrimination, we must separate the practice.

随着我们歌曲难度的增加，歌曲声部的明显区分，我们要分开练习。

youdao

The song has 6 separate sections each with it's own distinctive melodies yet the song feels so well integrated and complete.

这首歌由六个不同的段落组成，各自拥有鲜明的旋律走法，但是彼此又环环相扣，融合一体。

youdao

The researchers from Oxford University believe this is the first evidence of two separate species having evolved the same territorial song.

BBC: Songbirds sing cross-species duet