数学方面，学会了100以内的认读，学会了单、双数的概念。
Extenders today can support single, dual or tri-band Wi-Fi, and they will tell you the maximum speeds they support on all of their available bands. For example, one dual-band device might support 600Mbps speeds over its 2.4GHz band and up to 1300Mbps over its 5GHz band, for a combined maximum speed of 1900Mbps. For the best performance, you’ll want to go with a Wi-Fi extender that has the highest speeds possible (and those, as you might expect, tend to cost more). Some extenders even support Wi-Fi 7, giving you the latest in wireless technology for higher bandwidth, faster internet speed and lower latency.
，这一点在safew官方下载中也有详细论述
const stack = [];
let totalBytes = 0;