正式的表述是，对于给定的物品X，互补品是指那些一旦被消费会便会增加X的价值的商品。 如此，计算机的使用增加了如打印机和显示器这样的外围设备的价值。

Formally, for a given good X, acomplement is a good whose consumption increases the value of X. Thus, the use of computers increases thevalue of peripheral devices like printers and monitors.

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使用商品的缩图陈列你不同的货，亦要有放大的图片清楚显示你的物品。

You can display your catalog using thumbnails picture and allow users to get a better image by clicking on your images.

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