本文来自微信公众号:自然系列 (ID:nature-portfolio),作者:Alix Soliman,题图来自:AI生成 ...
QINGDAO, Jan. 11 (Xinhua) -- A carbon fiber metro train, dubbed CETROVO 1.0, began passenger service on Friday in the port city of Qingdao in east China's Shandong Province.