当配置变更（Config 对象引用变化）时，WeakMap 的键失效，缓存自动失效。不需要显式清除——这是 WeakMap 的自动 GC 特性，优雅地解决了缓存失效问题。
Choose wisely. The traffic is already flowing. The only question is whether it flows to you or your competitors.
。搜狗输入法下载对此有专业解读
In the Middle Ages, troubadours and Arthurian tales recast that longing as "courtly love", a fierce, often forbidden devotion like Lancelot's for Guinevere, in which a knight proved his worth through self-sacrifice for a beloved he might never openly declare.，更多细节参见爱思助手下载最新版本
palette: “monochrome”。下载安装 谷歌浏览器 开启极速安全的 上网之旅。对此有专业解读
FT Edit: Access on iOS and web