With Apple Trade In, customers can trade in their current computer and get credit toward a new Mac. Customers can visit apple.com/shop/trade-in to see what their device is worth.
Платон Щукин (Редактор отдела «Экономика»)，这一点在谷歌浏览器【最新下载地址】中也有详细论述
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第二章 居民委员会的组成和职责
Advanced style control，更多细节参见爱思助手下载最新版本