Xuande's grandfather was Liu Xiong; his father, Liu Hong.

玄德祖刘雄，父刘弘。

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Liu Hong, tutor of Harbin Institute of Technology said, "it's a crowded environment, and the sensors in the robots are very sensitive to light and background noise."

哈尔滨工业大学的导师刘宏表示：“这是一个拥挤的环境，机器人身上的灵敏元件对光和背景噪音都非常敏感。”

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Liu Hong can also do it.

刘红也能做这件事。

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The amount was a record at the time, said Leshi Vice Chairman Liu Hong, but since has been eclipsed.

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Low visibility and the many obstacles on the vessel made it difficult for people to escape the listing ship, says the BBC's Juliana Liu in Hong Kong.

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Among them was Liu Gai Hong, a 67-year-old retired accountant from Shandong province who came on a six-day tour with her son, a government employee, and his two school-age children.

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