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The maximum distance for a Wi-Fi extender varies depending on the model, but most can effectively extend your wireless signal between 800 and 2,500 square feet. Some high-end models may reach even farther, especially if they feature external antennas or are part of a mesh system with additional dedicated wireless access points.，这一点在im钱包官方下载中也有详细论述
2. 分区：小于pivot的放左边，大于的放右边