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Between bad Alexa jokes and innovative ideas pitched on stage, the rapid growth of voice-enabled technologies and companies was on full display Tuesday evening at the Alexa Accelerator Demo Night.

Besides, about 80 to 90 percent of high-tech computerization in countries like the United States and Germany came from civil companies. This suggests there could well be much room for civil companies to explore in defense-related fields in China as well, Xu said.

Besides, China Energy also plants trees to protect the ground surface of coal mines, and the average vegetation ratio at its coal mines has increased to more than 70 percent from just 3 to 10 percent before mining.

Bento has become a global phenomenon. Get into the art of making lunch

Betty Yao, the exhibition's curator, said Thomson, who was born in 1837 and died in 1921, was unlike most of the people who traveled to the Far East at the time.