file:01.ppt file:四级425翻译-基础阶段.pdf file:03修饰后置(中).mp4 file:四级听力基础能力篇.pdf file:10重音（中）.mp4 file:06英美发音区别（下）.mp4 file:02听不懂的原因.mp4 file:四级语法勘误说明.docx file:21高频词汇O.mp4
file:01.ppt file:四级425翻译-基础阶段.pdf file:03修饰后置(中).mp4 file:四级听力基础能力篇.pdf file:10重音（中）.mp4 file:06英美发音区别（下）.mp4 file:02听不懂的原因.mp4 file:四级语法勘误说明.docx file:21高频词汇O.mp4