1.Astronomers examining Hubble Space Telescope images of distant Sedna say the planetoid is even more mysterious than they first thought.
仔细查看了哈勃太空望远镜发回的远行星Sedna的照片后，天文学家们说，这颗小行星比他们最初想象的更神秘。
2.The Moon is a common planetoid in the solar system. It is much smaller than Earth. It is the only natural satellite orbiting around Earth.
月球是太阳系中的一颗很平常的小行星，它比地球小得多，它是围绕着地球转的唯一天然卫星。
3.Astronomers say the planetoid is even more mysterious than they first thought.
天文学家们说，这颗小行星比他们最初想象的甚至更神秘。
4.This image shows the Mars-sized planetoid approaching proto -Earth.
该图显示的是一火星般大小的行星正在接近原始地球。
5.The Mars sized planetoid is approaching proto -Earth.
火星般大小的行星正在接近原始地球。
6.According to Tolec, the Andromeda Council has a number of "biospheres" or large planetoid-like spherical spacecraft stationed around Earth.
据Tolec说，仙女座议会的“生态圈”是一种类似小行星大小的绕地球飞行的球形飞船。