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1·While tone and vowel harmony provided the original motivation, the non linear representations proved to be very useful to represent other suprasegmental features.

尽管其产生是为了解决声调及元音和谐，但其非线性层级模式在体现其它超音段音系现象方面发挥了很大的作用。

2·Labial harmony means that a non-high vowel gets rounded by the rounded vowel of the directly preceding syllable.

唇音元音和谐律是指一个不高的元音通过它前一个音节的元音变得圆滑。