Drinking alcohol can cause many damages to your body. Your vision can be affected as you will face blurred and double vision and even you can't identify colors.
Which country successfully launched the first high-throughput communication satellite "Shijian-13" which will enable passengers of high-speed trains to watch high-definition videos smoothly and help those at the scene of natural disasters ?
The Doppler effect or Doppler shift is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.
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