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Science Cafe - How many balloons would it really take for Roald Dahl's Mrs Twit to lift off? - 大象传媒 Sounds

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How many balloons would it really take for Roald Dahl's Mrs Twit to lift off?How many balloons would it really take for Roald Dahl's Mrs Twit to lift off?

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John Rutledge investigates the science behind Roald Dahl's stories

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How many balloons would it really take for Roald Dahl's Mrs Twit to lift off?
John Rutledge investigates the science behind Roald Dahl's stories
3 mins
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