课程知识点列表
if it were not for two factors
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hang out在这里是逛的意思吗？
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来自课程零基础至流利口语【微信福利班】
请问元音和辅音有没有好的办法去区分，读单词的时候我特别容易搞混
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There is a piece of cheese of 怎么理解？
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Now Alfred began a long series of skirmishes—and within a month the Danes had surrendered
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such and such和so and so
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