“流星体”用英语怎么说？

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 yea...