The children danced to the music that the pipers were piping.是什么意思？

The children danced to the music that the pipers were piping.

孩子们伴随着管乐器者们吹奏的音乐起舞.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

children

n. 孩子们(child的复数)，儿童，膝下，孥；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

danced

v. 跳舞( dance的过去式和过去分词 )，手舞足蹈，摇晃，跳跃；

例句
She skipped and danced along...
她蹦蹦跳跳地往前走着。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

music

n. 音乐，乐曲，乐谱，乐队；

例句
Avant-garde music to this day has not found general public acceptance.
先锋音乐时至今日都没有得到大众的广泛认可。

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

pipers

n. 吹笛人，吹风笛的人( piper的名词复数 )，管道工；

例句
The weather was unkind to those pipers who played in the morning.
坏天气对上午那些风笛吹奏者毫不容情。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

piping

n. （某种或某长度的）管道，笛声，（食品上装饰用的）奶油花饰，（衣服、椅罩等的）滚边；adj. 尖声的，高声的，平静的，平和的；

例句
The red dress had slim black piping around the neck.
这条红裙的领口有细细的黑色滚边。