单词：rezero operation
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Lesson 77 A successful operation 一例成功的手术 First listen and then answer the question. 听录音，然后回答以下问题。 Did the doctors find out how the woman died? The mummy of an E
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彼特范考萨在TEDGlobal舞台上演示了Rezero，一个能在球上保持平衡并跳舞的机器人。一群工程专业的学生设计了它，这是第一个能快速且优雅地移动甚至跳舞的球形机器人。
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