return CombinedStorage([db_storage, csv_storage])
President Lyndon B Johnson, like millions of others, sat glued to his television sets during the Apollo 8 mission
。搜狗输入法下载对此有专业解读
После объявления ракетной опасности стало известно, что две ракеты «Фламинго» системы противовоздушной обороны (ПВО) сбили над Чувашией, находящейся в почти 800 километрах от границы с Сумской областью Украины.
超过70000总吨的部分，每总吨增加200计算单位。
Beyond update dates, freshness signals include referencing recent events, citing current statistics and data, mentioning the current year in context where relevant, and updating examples to reflect current tools and practices. These signals reassure both AI models and human readers that the information hasn't become outdated even if the core topic is relatively stable.