| 1. | The galaxy in the photo is m87 , a typical elliptical galaxy
：图中的是m87星系，是一个典型的椭圆星系。 |
| 2. | Elliptical galaxies range in shape from almost perfect spheres to flattened globes
椭圆星系的外形范围从几乎完美的球体到压扁的球。 |
| 3. | Elliptical galaxies do not take on the flat - disk or spiral shapes that most galaxies do
椭圆星系并不具有大多数星系具有的扁圆或是螺旋型的形状。 |
| 4. | Spiral galaxies contain both young and old stars . in general , they are brighter than elliptical galaxies
：旋涡星系同时拥有年老和年青的恒星，它们通常比椭圆星系光。 |
| 5. | In the specific model we developed , elliptical galaxies have roughly equal numbers of each type
在我们所发展出的模型里，这两类星团在椭圆星系中的数量大致上是差不多的。 |
| 6. | The light from an elliptical galaxy is brightest in the center and gradually becomes fainter toward its outer regions
从椭圆星系发出的光在中心部分最亮越靠近边缘越暗淡。 |
| 7. | Taking the famous m87 elliptical galaxy as example , the dark matter in its core runs up to 2 . 4 billion solar masses
其中最著名的m87椭圆星系，其核心的黑暗质量竟达24亿太阳质量！ |
| 8. | As far as astronomers can determine , elliptical galaxies rotate much more slowly than spiral galaxies or not at all
直到天文学家能够测定，椭圆星系自转要比旋涡星系慢的多或者根本不旋转。 |
| 9. | Elliptical galaxies have much less dust and gas than spiral galaxies have , and few new stars appear to be forming in them
椭圆星系中的气体和尘埃比旋涡星系要少得多，貌似其内部也少有恒星诞生。 |
| 10. | At least some elliptical galaxies , as well as the bulges and halos of spiral galaxies , may have arisen from such collisions
至少螺旋星系的核球与晕，以及某些椭圆星系，可能是由此种碰撞产生的。 |
