No amount of change, how can a qualitative leap?

没有量的变化，怎么能有质的飞跃？

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Simple repetition, eventually, there will be a qualitative leap.

简单的重复，终究会有质的飞跃。

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The emerge of school songs has made China's non-major musical education a qualitative leap.

“学堂乐歌”的兴起，促使我国的普通音乐教育产生了质的飞跃。

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On Wednesday, the king told Mr Ensour that the "primary responsibility of this government in this transitional phase is to pave the way for a qualitative leap in Jordan's political history and democratisation".

BBC: Jordan's King Abdullah swears in caretaker government