asteroids造句
Asteroids, also known as " minor planets ", are numerous in the outer space.
小行星, 亦称为 “ 小型行星 ”, 在外太空中不计其数.
Most stars probably have their quota of planets, meteorids, comets, and
asteroids.
多数恒星也许还拥有若干行星 、 流星 、 彗星和小行星.
The orbits of such faint
asteroids are not yet known.
但是对于这样暗的小行星的轨道,迄今尚未弄清.