An asteroid that's almost 3km across with its own moon is flying close past the Earth, giving scientists the chance to study it in detail. ____________________ the object named 1998 QE2 passed with a safe distance of about 6 million km. Scientists hope to find out what it is made of and where in the Universe it originated. BBC News 一颗直径约3公里并带有"月亮"的小行星掠过地球,这让科学家们有机会对其进行详细研究.这颗命名为1998 QE2的星体____________________但以600万千米左右的安全距离与地球擦肩而过.科学家们希望研究其构造以及它在宇宙中的来源. BBC新闻报道
