求翻译：杂曲的曲式结构是多种多样的，最常见的是上下句结构，四乐句的乐段结构也比较常见。它的调式一般为徵调式，其音阶排列既有五声音阶，也有六声音阶、七声音阶。其中“开花调”的曲调虽然多是上下两句或这两种句式的扩充，根据歌词的句数可以作多次的反复。但在演唱中有时反复下句的词和腔，形成三句的结构。“开花调”的节拍虽然没有强烈的节奏感，但也有一定的规律。例如《亲圪蛋下河洗衣裳》，它的结构为对仗式的上下结构，句法比较简单，句子也比较短小，是徵调式，音阶为七声调式。是什么意思？

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Song of the musical idiom, structure is the most common variety is the up and down 4 sentence structure, paragraph structure, the musical notation is also more common. It's adjustable in general for their singing, as well as arrange 5 sound, and there are 6 bands, 7 sound pentatonic scale. One of th

Miscellaneous musical structure of the song is varied, is the most common sentence structure, four-sentence passage structures are more common. General tonality as a sign of its melody, its scales arranged in both five-voice band, a six-voice band, seven voices-order. "Flowering adjustment" Although