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Doppler shift

noun

🔊/ˈdɒplə ʃɪft/

🔊/ˈdɑːplər ʃɪft/

(physics物理)

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the change in pitch (of sound), colour (of light), etc. caused by the Doppler effect多普勒频移（多普勒效应引起的声、色等的变化）