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单词 ball lightning
释义

ball lightning

noun [mass noun]
A rare and little known kind of lightning having the form of a moving globe of light several centimetres across which persists for periods of up to a minute.In nearly all reported cases, the observers saw another form of lightning flash before seeing ball lightning....
  • Some researchers believe that ball lightning occurs when lightning bolts touch down on the Earth's surface.
  • Extremely rare, there are few pictures of ball lightning, which is usually described as a floating sphere, often about the size of a basketball.
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更新时间:2025/1/3 15:38:51