time.sleep(2 ** attempt) # 指数退避
第六十一条 本法下列用语的含义：。同城约会是该领域的重要参考
，详情可参考旺商聊官方下载
Short but very sweet tale asks the player to compile a scrapbook of mementoes telling the story of a heartfelt bond that frays over time，更多细节参见im钱包官方下载
(Some spoilers below but no major reveals.)