binary asteroid双小行星
Apollo Asteroid阿波罗型小行星;阿波罗族小行星
Asteroid Dust星际尘埃
Asteroid Destroyer行星护卫队
regular asteroid正星形线
asteroid sizes小行星尺寸
asteroid group[天] 小行星群
asteroid mound星状丘
vulcanoid asteroid水内小行星
N-COUNT（可数名词） An asteroid is one of the very small planets that move around the sun between Mars and Jupiter. (火星和木星间运行的)小行星