结构推理 She used so many technical terms in her speech that the audience could make neither head nor tail of it.
【正确答案】她在演讲中运用了许多专业术语，使听众听得莫名其妙。
【答案解析】[翻译指导] make neither head nor tail of it字面意思为“不能理解头和尾”，这里将词义抽象化，翻译为“莫名其妙”。