“流星体”造句

流星体在快速穿过大气层时, 因磨擦而迅速加热.
Moving swiftly through the atmosphere, meteoroids are heated rapidly by friction.

如果流星体聚集在一起, 则每年看到的流星数都不一样.
If the meteoroids are bunched together, the number of meteors seen varies from year to year.

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