眼镜,是人们日常生活中经常接触的产品,对它的起源众说纷纭,有的说在十三世纪后半叶成尼斯出现的水晶眼镜是最早的眼镜;有的说在十三世纪前半叶中国宋代就出现了水晶眼镜等等。但不管怎么说,眼镜作为一种历史悠久的传统产品,并为人们所熟知,是确定无疑的了。 Spectacles are products that people often come into contact with in their daily lives. There are various opinions about its origins. Some say that the crystal glasses that appeared in Nice in the latter half of the 13th century were the earliest glasses; some said that during the first half of the 13th century, the Chinese Song Dynasty Crystal glasses and so on appeared. But in any case, as a traditional product with a long history, and known to people, it is certain.