the frresh air and sweet song of the birds.改错 song 改成了songs.但sweet 前不缺少个the吗?

题目

the frresh air and sweet song of the birds.改错 song 改成了songs.但sweet 前不缺少个the吗?
金山词霸上的例句
3.the sweet song of the lark; the sweet face of a child.
云雀甜美的歌声；孩子甜美的面容。
它都没用songs啊。
网上搜得一篇：
你真伟大英文版 - 赞美诗歌 - 旷野呼声论坛 - 大型基督徒论坛
Soon afterwards he heard the calm,sweet songs of the birds in nearby trees.The experience prompted the pastor to fall to his knees in humble
这里的sweet songs 前面就有the 不过就多了一个形容词calm

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