SIGMA LEARNING
Learn with purpose.
让知识变成能够表达和应用的能力。
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WORDPLAY & CULTURE · 英语趣味表达
猜一猜，再说出来
先听英文谜面，自己猜，再点“揭晓答案”。首批10道只是起点，不设数量上限；经典谜语与当代流行表达分别核实出处。
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Speaking practiceVisual learningVISUAL EXPLANATION
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Key terms & expressions
ACTIVE RECALL · 有问有答
现在轮到你回答
EVIDENCE & LIMITATIONS · 证据与边界
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说明：课程插图属于自行绘制的科学机制示意，不是文献原图或临床统计数据。未核实的有效率、剂量对比和百分比一律不展示。文献链接是核查入口；完整全文、图号及具体量化结果尚需逐项审核。