As before, computers reserve a special region of memory for pixel data, called the frame buffer.

和以前一样，计算机为像素数据保留了一个特殊的内存区域，称为帧缓冲区。

By dropping a small piece of data called a cookie, your device will now remember information, like how long you linger on a certain item, and whether you added anything to your shopping cart, but didn't purchase it.

通过名为 cookie 的数据，你的设备可以记录信息，例如您在某件商品上停留的时间，以及您是否在购物车中添加了某样东西，但没有购买。