| 1. | Atoms could be repelled by sunlight, sufficient extent to account for the long comet tails we observe .
原子会受到太阳光的斥力作用，其程度足以形成我们所观测到的很长的彗尾。 |
| 2. | The spectacular tail spreads across the sky and is visible to southern hemisphere observers just after sunset
太阳下山后，南半球的观测者便可看到这条横跨在天际的彗尾。 |
| 3. | Reports even have the tail visible just above the horizon after sunset for many northern observers as well
由许多北半球的观测报告指出，在太阳下山后的地平线附近也可以看得到彗尾。 |
| 4. | With infrequent visits , comet kiess can ' t build up a broad dust band , and only generates a narrow trail of debris each time
由于琪斯彗星很少光临，它无法形成一条宽阔的尘埃带，而每次只能产生一条狭窄的由碎片组成的彗尾。 |
| 5. | Historically , these visitors to the inner solar system provided a dazzling sight - brilliant , with long , narrow tails visible even in twilight
历史上，这些内太阳系的过客曾经向人们展示了惊艳的景观? ?细长的彗尾与明亮的彗核辉映着黄昏的天空。 |
| 6. | Fascinated sky enthusiasts in the earth ' s northern hemisphere were treated to an instantly visible comet head and a faint elongated tail near sunrise and sunset
北半球的众多天文迷在黄昏和清晨争睹这颗拥有肉眼可见的彗核以及细长的彗尾的彗星。 |
| 7. | Push the dust and gases of the comets away , this will result in a beautiful long tail . from this , we know why the comet tail is always pointing away from the sun
便会把这些气体尘埃向后推，形成美丽而壮观的彗尾，这也是彗尾为甚么会永远背著太阳的原因。 |
| 8. | The wind compresses the earth ' s magnetic field on the dayside of the planet ? the side facing the sun ? and stretches the field on the nightside to form a long tail resembling that of a comet
太阳风在地球昼侧（向阳面）挤压磁场，将夜侧磁场拉成一条长长的尾巴，就像彗星的彗尾。 |
| 9. | Nasa ' s stardust craft passed through the dusty shroud of a comet called wild 2 in 2004 and last january dropped to earth a canister of the material that the mission had collected ( sn : 3 / 25 / 06 , p . 182 : http : / / www . sciencenews . org / articles / 20060325 / fob7 . asp )
美国国家航空航天局的“星尘”号飞行器2004年穿过一颗名叫“维德尔2 ”的彗星的彗尾，并于去年一月（ 2005年）返回了地球，带回了一罐这项任务收集的物质。 |
| 10. | Then were electrophored . the extent of dna migration were measured . index - percentage of " comet " cell and " comet tail " were analysed that indicated when vero cells were treated with 2 u g / ml quinocetone vero cells got midium - grade damage , and were treated with 6 u g / ml olaquindox vero cells got midium - grade damage
喹乙醇染毒剂量在2 10 g ml时细胞存活率90 ，以2 10 g ml剂量的喹乙醇染毒处于对数生长期的vero细胞，后经过电泳，通过分析彗星样细胞发生率和彗尾长短等指标，结果表明染毒剂量在6 g ml对dna造成中度损伤。 |
