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Among the characters are the words "zhai zi zhong guo", which means "live in the central area of the world". This is evidence that Chinese people were calling their country "zhongguo", meaning China, more than 3,000 years ago, said Chen.
Amazon’s inventors are taking a page from Inspector Gadget’s playbook to design drones with adjustable landing legs and reconfigurable propellers.
Amazon’s idea is focused on the interactions between the automated drone system and the user. It includes features that would allow a user to summon the drone to their location. The drone would also be able to detect and avoid obstacles in the travel path of a user and/or tow line. “For example, when a user is snow skiing in a mountainous area, a designated travel area may be determined that avoids cliffs or other dangerous areas,” the filing notes.?The drone could even lift a user in the air.
Amid "extraordinary uncertainty" about the depth and duration of the crisis, the world could anticipate the worst economic fallout since the 1930s' Great Depression, the IMF chief warned.
Among the 70 cities, new house prices only fell in four cities in October, including Xiamen in Fujian province, Shenzhen in Guangdong province, Wenzhou in Zhejiang province, and Sanya in Hainan province.
来源：资阳报