This much is certain: the tendency is upward with the march of civilization, toward a higher velocity.
有一点非常确定：随着文明的进步，流通速度将保持上升的趋势。
The porcelain and pottery wares in these history period put tea culture upward to art and promoted the human civilization.
唐、宋、明代的陶瓷器皿分别以其特有的审美功能，将茶文化提升到艺术的境界。
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