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DEFINITIVE EXAMPLES 权威例句〔fumble with〕The teacher fumbled with his notes and began to speak.老师手忙脚乱地翻找讲稿，然后开始讲课。21世纪英汉
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frequency convolution theorem
frequency coordination
frequency correction
frequency corrector
frequency counter
frequency coverage
frequency curve
frequency curve
frequency curve
frequency curve chart
frequency cutoff
frequency demodulation
frequency demultiplication
frequency demultiplier
frequency departure
frequency detector
frequency detuning
frequency deviation
frequency deviation measurement
frequency deviation meter
frequency deviation meter
frequency deviation region
frequency diagram
frequency dial
frequency difference
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更新时间：2026/8/19 21:40:48