First evidence of the item was in diagrams on ancient clay tablets: there were pictures of a potter's wheel that was used in Ur in Mesopotamia, c. 3,500 BCE.
这种东西最早见于刻在古代粘土书写板上的图画中：有些图画描述了公元前3500年左右，古美索不达米亚的乌尔城曾经使用了陶轮。
Vitamin C tablets may reduce your chance of getting a cold.
维他命C丸可能减少感冒机会。
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