nova吊灯-新.mp4
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    • 00:00:00
      It is a free lecture
    • 00:00:02
      And take advantage of it as I teach students
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      We need a simple thing that we can do
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      M Just one day, and sometimes you need it
    • 00:00:13
      Of course I think we will do a free lecture at thegarter university or somewhere else someday
    • 00:00:17
      So servicee are and that is up to you

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