星

• In comparison to their size on the main sequence, the stars now become giants .
  同它在主星序上的大小相比，恒星现在就成了巨星。
• This is the famous nilometer by which water levels in the river nilo were noted .
  这就是著名的尼罗河仪。用它测星尼罗河的水位。
• We now observe one of these stars then proceed to the second and to the third .
  现在我们来观测第一颗星，然后转到第二颗和第三颗。
• Mariners were also able to fix their latitude, by using an instrument called an astrolabe .
  海员们还可使用星盘这种仪器确定纬度。
• Both changes make the star tend to shrink, which induces stresses in the crust .
  这两种变化都会使星体收缩，因而在星壳中产生应力。
• These basic system are referred to as radiating, harp, fan, and star systems .
  这些基本体系归类为：辐射形，竖琴形、扇形和星形体系。