leapfrog method是什么意思？

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• 解决方案英文
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• 实施英文
• general
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• 参数英文
• disappointed
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• 领域英语
• 来源英语
• lesson
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• dragon
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• tomato
• 队长的英文
• saturday
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• neck
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• mind
• 导师英文
• explore
• giraffe
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• BARRIE

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• Promordial
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• postpone a deadline
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• Such as soldiers
• telescopic
• put on record
• suspension loop
• Deryek
• trimming joist
• Mensheviks
• To knit together