| 1. | Another way to think of the problem is in terms of cosmic expansion
思考这个问题的另一个进路，就是宇宙膨胀。 |
| 2. | Cosmic expansion has got its groove back : once thought to be winding down , it is actually speeding up
宇宙膨胀也因此重获律动：当你认为它应该变慢时，实际上却变快了。 |
| 3. | Cosmic expansion continued to cool the gas , so one might expect that the cosmic gas would still be cold and neutral today
宇宙膨胀持续冷却这些气体，因此我们预期这团宇宙气体在今日仍然应该保持著低温与电中性的状态。 |
| 4. | Cosmic expansion had diluted the density of the gas to the point where collisions were too infrequent to equalize the spin and kinetic temperatures
宇宙膨胀至此，已将气体稀释到一定的程度，使得原子碰撞不再频繁地让自旋与动力温度相等。 |
| 5. | Like darwinian evolution , cosmic expansion provides the context within which simple structures form and develop over time into complex structures
宇宙的膨胀就像达尔文的演化论，对于简单的结构如何逐步发展形成复杂的结构，提供了可循的脉络。 |
| 6. | You will probably die long before your alter egos come into view , but in principle , and if cosmic expansion cooperates , your descendants could observe them through a sufficiently powerful telescope
也许你早在见到另一个你的很久以前就死了，但是原则上，如果宇宙膨胀的方式肯配合，有一天你的后代子孙，应该可以用够强的望远镜观察到他们。 |
| 7. | In recent years researchers have calculated that if a value called omega , the ratio between the average density of the universe and the density that would halt cosmic expansion had not been within about one quadrillionth of one percent ; does anyone know hot to write that number
听著，最近从事研究的人计算到，若一个值称为亚米加，宇宙平均密度与停止宇宙扩张的密度的比例，少于百分一的千万亿分一。谁知道这怎么写？ |
