铁道科学与工程学报征稿

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Since then, the sector has grown rapidly.

Since Uber started shaking up Europe's transport sector in 2011, regulators have faced a dilemma over how best to regulate the company, as a digital group or a transport provider.

Since the end of 2016, seven provincial-level regions have entrusted their pensions to the National Council for Social Security Fund (NCSSF) in the hope of more diverse and higher returns.

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Since the outbreak of COVID-19, Australian and Chinese researchers have been working closely to find a vaccine.

Since February, Fliggy, the online travel agency arm of Alibaba Group, has staged over 25,000 livestreaming sessions. They were hosted by online celebrities, officials and tourism business executives, and have attracted more than 70 million viewers (potential consumers).

Since being founded in 2009, United States-based marketplace Listia Inc has also become a leading online trading marketplace for both new and used goods. Also based on a credit system, the platform offers dozens of categories, including clothing and electronics.

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Since the Cambridge Analytica scandal, Facebook has suspended 200 apps from its platforms as it investigates third-party apps that have access to large quantities of user data. Zuckerberg said he expected more apps to be penalized.

Since then, Losang Drolma has become a regular livestreamer and helped local villagers promote their goods like blueberries, walnuts and traditional herbs.

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Since the virus outbreak, China Re has donated 10 million yuan to help fight the pandemic.

Since they were first introduced to China in 2011, Bukovnik's works have been widely exhibited in the country. He has had 11 solo exhibitions at museums in Shanghai, Beijing, Suzhou, Tianjin, Xiamen and Chenzhou.