求翻译：一直到元代，一些文人书画家尝试用花乳石来刻印。这个革命性的创举，宣告了石质印章时代的到来。由于花乳石柔而易攻，可以自己操刀镌刻，为文人介入印章艺术创造了方便之门。中国印章艺术由此进入一个异彩纷呈，前所未有的鼎盛时期。是什么意思？

Until the Yuan Dynasty, literati painting and calligraphy try to use the spent acid rock engraving. This revolutionary innovation, declaring the era of stone seal. The spent acid rock, soft obviousness attack, can wield the sword engraved to create a door for scholars involved in the stamp art. Chin

Until a generation $calligraphers, some writers try to rock it with milk engraved. This revolutionary initiative and to declare the stone seal the arrival of the ERA. Because breast stone flower soft and easy-to-strike, you can own, endless engraved seal is a civilian involvement in the artistic cre

Arrives the Yuan Dynasty continuously, some writer painter-calligrapher attempts with the stone resembling tortoise shell engraves.This revolutionary pioneering work, announced the lithical seal time arrival.Supple and easy to attack as a result of the stone resembling tortoise shell, may own fence

All the way to the Yuan dynasty, literati painting tried stone carving flower milk. This revolutionary organization, and proclaimed the arrival of the seal of the stone age. Easy to attack because of the stone flower milk soft, surgeon can own engraved, for scholars involved in seal art to create th

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