| 1. | As the nearest celestial body to our earth, the moon has, of course, always been a favored object for the amateur astronomer .
月球是最接近地球的天体，当然总是业余天文学家喜爱的对象。 |
| 2. | As the spacecraft came closer to the earth , it was put into its re - entry mode
宇宙船在接近地球的时候，采取了重返大气层的操作方式。 |
| 3. | The moon , being our only natural satellite , is the closest celestial body to the earth
月球，是人类唯一的天然卫星，亦是最接近地球的天体。 |
| 4. | A mars day is almothe same length as an earth day . a day on the moon is an earth month
火星的一天接近地球的一天，月球的一天是地球的一个月。 |
| 5. | The moon , being our only natural satellite , is the closest celestial body to the earth
月球，是人类唯一的天然卫星，亦是最接近地球的天体。 |
| 6. | It is the nearest star and is the only star that we can study in details
在天文学上，太阳是最接近地球的恒星，亦是唯一可以让人类详细研究的恒星。 |
| 7. | Future close approaches of mars to earth until 3000ad , in ascending order of distance
未来火星更接近地球的日期截至公元3000年，按距离由近至远排列 |
| 8. | It seems certain that no human observers will ever get closer to the core of the earth than these men
看来很确定的是，不会再有任何其他观测者能比这三个人更接近地球的核心。 |
| 9. | Venus is the second closest planet to the sun in the solar system . it is also closer to the earth than any other planets
金星是太阳系中最接近太阳的第二颗行星，亦是最接近地球的行星。 |
| 10. | There is much interest in our closest planetary neighbour mars , with two space missions currently exploring mars surface
一直以来，人类对火星这颗最接近地球的行星充满好奇，现时正有两艘探测器在火星面进行探索。 |
