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词行天下：像学母语一样学英语 彩插3
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a gun at hand
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a gun in my hands
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a lot of guns on hand
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词行天下：像学母语一样学英语
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彩插4
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“间隔学习”与“集中学习”的记忆效果对比图
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词行天下：像学母语一样学英语
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彩插5
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“突出”“重复”和“复述”对记忆的支持作用效果图
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词行天下：像学母语一样学英语 彩插6
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In the world of the DIY plumbing projects,
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replacing a kitchen faucet is the easiest job to tackle…
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