本文以眼镜为例，从历代流行眼镜分类分析的基础上寻找各种类型的变化规律，从而对未来流行性产品变化趋势进行预测，以期对当前我国流行性产品的开发提供借鉴。
Through the graph we can also find every group's changing curve, from which then we abstract the rules for the four groups . At the same time, every group's developing trend will appear or be fore…
出于预算考虑，希望NASA（美国宇航局）不要燃烧太多的眼镜；有着厚实、圆形框架的TruFocals可能成为目前出售的价值900美元的眼镜中最流行的款式。
For the budget's sake, hopefully NASA won't have to burn too many pairs; with their thick, circular frames TruFocals might be the least-fashionable $900 glasses ever sold.
你记得约翰尼·迪安，那位戴着古怪的眼镜留着长卷发的流行歌手吗？
Do you know Johnny Dean, the pop singer with funny glasses and long curly hair?
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