1、When a meteoroid enters the atmosphere, it compresses the air in front of it.
當(dāng)流星體進入大氣層，它壓縮的空氣在前面的。

2、Studies on meteoroid streams are briefly and systematically presented.
對流星群的研究作了簡明而系統(tǒng)的介紹。

3、The so-called meteorite is a large meteoroid landed on the Earth's surface.
所謂隕石，就是降落于地球表面的大流星體。

4、The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.
彗星的噴發(fā)速度在流星群的演化過程中起著重要作用。

meteoroid翻譯