依我看成都最优秀的学生绝不逊色.I would say the best students at Chengdu are no laggards.汽车径直朝成都驶去.The car headed directly toward Chengdu.你在成都要待多久?How long will you stay in Chengdu?...
They turned their telescopes towards other nearby galaxies.他们把望远镜转向附近其他星系。Quasars are the highly energetic cores of distant galaxies.类星体是遥远星系的极为活跃的核心体.We still don't know how many galaxies there are in the universe....