B |     (ECNS) -- Shenzhen Customs signed its first sister-port cooperation memorandum Thursday with Valparaíso Customs of Chile, under the APEC China Year 2026 framework.    The agreement expands the China-Chile Smart Customs partnership through information sharing and enforcement coordination. Areas of cooperation include mutual recognition of Authorized Economic Operator status, clearance efficiency, enterprise credit, anti-smuggling and IP protection.    Pan Chuxiong, deputy director of Shenzhen Customs, said Shenzhen maintains close economic and trade ties with Chile, with three direct shipping routes to major Chilean ports each week. In the first seven months of this year, trade between Shenzhen port and Chile reached 21.96 billion yuan (about $3.06 billion). More than 40% of Chile's cherry imports to China enter through Shenzhen.    "The cooperation with Valparaíso Customs will further enhance cross-border trade facilitation and create new opportunities for bilateral trade in high-quality goods," Pan said.        (By Tang Yuxian)                    。这两项研究也是迄今最大规模的关于行走步数对健康影响的研究。研究发现，每天走1万步可以降低患痴呆症、心脏病、癌症和死亡的风险。然而，更快的步速表现出的好处超过了所达到的步数。

C | 研究论文合著者、悉尼大学查尔斯·珀金斯中心和医学与健康学院研究员马修·艾哈迈迪博士说：“这一研究的结论是，为了保护健康，人们不仅可以把每天走1万步作为理想目标，还可以走得更快些。”研究人员称，每走2000步到1万步，过早死亡的风险就会降低8%—11%。心血管疾病和癌症发病率也有类似的关联。每天走的步数越多，患全因痴呆症的风险就越低。每天走3800步，风险就降低了25%。9800步是降低50%痴呆症风险的最佳步数。研究还表明，步频强度或较快的步速显示出与所有结果（痴呆症、心脏病、癌症和死亡）的有益关联，超过了每天的总步数带来的益处。这些发现可能会为基于步速的体育运动指南提供参考，并有助于制定旨在预防慢性病的有效公共卫生计划。

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