1. The pictures it sent us were very disappointing because its main mirror was faulty!
它传送给我们的图像很令人失望，因为它的主镜片存在误差。
知识点：it sent us是the pictures的定语从句，省略了关系代词that或which。
真题检测：非限制性定语从句
An investigation was made into the accident,（ ）fifty people were killed.
A. for that B. where C. when D. in which
答案：选A
分析：被修饰的先行词是accident,因此排除B、C选项；又因为本句为非限制性定语从句，而且介词后不用that,所以D选项也不对。A是正确答案。
翻译：人们对那场事故进行了调查，它造成了50人死亡。
2. A robot—arm from the Endeavour will grab the telescope and hold it while the astronauts make the necessary repairs.
当宇航员进行必要的修复工作时，“奋进”号上的一只机器手将抓住望远镜并托住它。
知识点：make the necessary repairs 作必要的修理
3. Of course, the Hubble is above the earth"s atmosphere, so it will soon be sending us the clearest pictures of the stars and distant galaxies that we have ever seen.
当然，哈勃位于地球的大气层之外，因此，它很快就会给我们俜送我们所见到过的、有关行星和远距离星系的最清晰的照片。
知识点：本句后半部分that we have ever seen为定语从句。
