1. That same day, an amateur observer in Australia found a dark spot on Jupiter that had been caused by a meteoroid impact. 同一天，澳大利亚一位业余天文学家发现木星表面存在一个暗斑，很可能是由于陨星体碰撞造成的。
2. This tight association is most naturally explained if the particles are debris ejected by meteoroid impacts onto the satellites. 这麽紧密配合的现象，只有一种最好的解释：这些粒子是流星体撞击卫星时，喷发出来的碎片。
3. Note the terms here: The speck of sand is a "meteoroid"—it does not become a "meteor" until it is hot and glowing in the Earth's atmosphere. 流星的亮光是由于热的大气层、热的硅和流星体的其他金属作用下发光产生的。
英英解释
n.
1. (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmosphere
