| 单词 | Doppler effect |
| 释义 | Doppler effectDoppler effect /ˈdɑplɚ ɪˌfɛkt/ noun [singular] science, physics a change in how someone hears a sound or sees a light as it is moving toward or away from him or her so that a sound seems higher as it is moving closer, and a light seems more blue |
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