（六）违反规定不及时退还保证金的；
Trump in February said he would leave the decision up to the Department of Justice, rather than being personally involved, as he had initially claimed.，推荐阅读91视频获取更多信息
Медведев вышел в финал турнира в Дубае17:59，这一点在搜狗输入法2026中也有详细论述
Answer (Playground):
中游的优势在于规模效应显著，边际成本随业务扩张不断递减，且客户迁移成本高，黏性极强。但行业竞争激烈的同时，也潜藏着两大风险：一是价格战频发，压缩盈利空间；二是高度依赖下游需求持续性，若AI应用商业化进程延迟，算力租赁需求可能出现下滑。