常見例句雙語例句While written manuscripts were used for teaching in medieval times, they were written on birch bark or palm leaves, until the advent of the printing press from the 16th century.寫下的手稿在中世紀被用來教學，寫在白樺樹皮和棕櫚葉上，直到16世紀出現(xiàn)印刷機為止。 返回 bark press