播放列表
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第071集_life is a game
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第072集_globalization
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第073集_self-control
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第074集_the four freedoms
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第075集_a psalm of life
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第076集_conservatism of the english people
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第077集_you are what you do
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第078集_april fool’s day
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第079集_bill gate’s speech to qinghua university(1)
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第080集_bill gate’s speech to qinghua university(2)
