| 1. | The collapse of the protostella is extremely non-homologous .
原恒星云的坍缩是极其不保形的。 |
| 2. | As soon as this occurred, the giant gas ball collapsed rapidly .
一旦出现这种情况，这个庞大的气体球便迅速坍缩。 |
| 3. | During collapse, the dark cloud "fragments" into a series of dense clumps .
在坍缩过程中，暗云“碎裂”为一批稠密的团块。 |
| 4. | A star is formed when a cloud of gas collapses from the interstellar medium toward high density .
一个气体云自星际物质中坍缩，密度达到很高时，即形成了一个恒星。 |
| 5. | Progressively, larger objects substantially increase the timescale for collapse over still longer wavelengths .
进而言之，较大的天体，因要在更长的波长上坍缩，将大大增长时间尺度。 |
| 6. | After the initial collapse and hydrodynamic phases, a young stellar object is still embedded deep within its progenitor .
在初始坍缩和流体力学阶段之后，一个年青星体仍然深深嵌在产生它的母体之中。 |
| 7. | Two-and three-dimensional hydrodynamic computer codes have been applied to the study of the early phases of the collapse of a gas cloud .
二维和三维流体力学计算机程序，已用于研究气体云的早期坍缩。 |
| 8. | Collapsing interstellar cloud reverses its gravitational infall and expands outward into the relatively quiescent interstellar environment .
坍缩的星际云克服向内的引力而向外膨胀到较宁静的星际环境中去。 |
| 9. | The addition of matter over this critical value would lead to the collapse of the star without limit because of the ever-increasing gravitational forces .
质量超过临界值时，增加着的引力将造成恒星的无限坍缩。 |
| 10. | A burnedout star could collapse to so small a radius as to make the effects of general relativity quite important near its surface .
一个燃烧完的星球可能坍缩到如此之小的半径，以致在其表面附近，广义相对论效应相当重要。 |
