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    2. —Why do you want to move this table out?

       —-Because it up too much room.

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    Since the 1970s,scientists have been searching for ways to connect the brain (大脑) with computers.Brain computer interface (BCI) technology could help people with disabilities send commands (命令) to machines.

    Recently,two scientists,JoSe Millan and Michele Tavella from the Federal Polytechnic School in Lausanne,Switzerland,show a small robotic wheelchair (轮椅) directed by a person's thoughts.

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