Or a football player--when you're running down the field, why did you go to this way instead of that way ? when you're running down the field?

或者是问一个橄榄球运动员--当你在操场上奔跑时，你为什么要往这边跑而不是那边呢,当你在操场上跑的时候？

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Melodies that are just running up and down a scale-- neighboring tones.

级进旋律是指在整个音阶的,相邻音符上跑动的旋律

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