百度 除此之外，宝马集团去年在研发方面的投入是2017财年数据中最大的亮点，比2016年增加了%，达到亿欧元（约476亿元人民币），占总收入的百分比上升至%。
Vividly bright stalactites hang from the ceiling of a karst cave in Dongyanglou village, Tai'an city, in East China's Shandong Province. Crustal deformation that took place billions of years ago resulted in a great rift valley between Mount Taishan and Culai Mountain, an underground valley that later turned into the biggest karst cave in the world. It houses a great variety of stalactites and each is a unique formation. The cave was discovered accidentally in 2003 and is now open to visitors, who can appreciate the cluster of geological wonders. The scenic spot is a 4A-level tourist site and attracts over 2 million visitors annually from home and abroad. (Photo/China Daily)
