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An autonomous delivery vehicle attracts visitors' attention at an expo in Beijing in October. [Photo by Cheng Gong / For China Daily]
An employee works on a mask production line for exports in Xiangyang, Hubei province, March 27, 2020. [Photo/Xinhua]
An exclusion zone has been declared 4 km from the crater and extended to 6.5 km for the areas southwest of the crater, said Sutopo Purwo Nugroho, spokesman for the national disaster management agency.
An image from Amazon’s “Distributed speaker synchronization” patent, granted in 2016. (USPTO)
An Amazon spokeswoman declined to comment for this story.
来源：资阳报