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。
На шее Трампа заметили странное пятно во время выступления в Белом доме23:05
全年服务进出口总额80823亿元，比上年增长7.4%。其中，出口36268亿元，增长14.2%；进口44555亿元，增长2.5%。服务进出口逆差8287亿元。。关于这个话题，体育直播提供了深入分析
Виктория Кондратьева (Редактор отдела «Мир»)
，更多细节参见体育直播
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