One sound more, or sound better, a mellower sound and so forth.

一把可能音量大一些，或音色好一点，另一把甜美一些等等。

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On the other hand, laws and regulations become more sound, a sound;

另一方面，法律法规建设渐趋完善、健全；

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On the other hand, laws and regulations become more sound, a sound;

另一方面，法律法规建设渐趋完善、健全；

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