In the early days, public Wi-Fi networks often resembled the Wild West, where ARP spoofing attacks that allowed renegade users to read other users' traffic were common. The solution was to build cryptographic protections that prevented nearby parties—whether an authorized user on the network or someone near the AP (access point)—from reading or tampering with the traffic of any other user.
get desiredSize() { return closed ? null : 1; },
，这一点在91视频中也有详细论述
打开任何一家邮轮的行程单，上海出发，基本就是济州岛、釜山，越南、马来西亚等东南亚目的地都仍属少数；天津出发就更惨，还得先在渤海湾里晃一天，看黄汤一样的海水。
Hurdle Word 4 hintLand.