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- frizzle, ms. (fictitious character) (3)
- ability (2)
- children's audiobooks (2)
- climatic changes (2)
- dinosaurs (2)
- dogs (2)
- drawing (2)
- global warming (2)
- physical geology (2)
- schools (2)
- senses and sensation (2)
- water (2)
- waterworks (2)
- 电学 (2)
- antarctica (1)
- astronomy (1)
- beehives (1)
- bees (1)
- children (1)
- electric power (1)
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