BEIJING, Sept. 14 (Xinhua) -- The 2025 China International Fair for Trade in Services (CIFTIS) concluded in Beijing on Sunday with over 900 signed agreements in sectors including construction, informa ...

BEIJING, Sept. 14 (Xinhua) -- Chinese researchers have developed a hybrid framework to trace sources and change of on-road carbon dioxide emissions in real time with 30-meter resolution, according to ...

预制菜作为现代食品工业的产物，其争议本质上是关于食品安全、健康、文化习惯和社会发展的复杂议题： 添加剂问题：部分预制菜为延长保质期或提升口感，可能含防腐剂、增味剂等，长期摄入可能引发健康疑虑（如钠含量过高、营养流失）。