| 1. | Near - earth asteroid belt
近地小行星带 |
| 2. | Earth - approaching asteroid
近地小行星 |
| 3. | Earth - crossing asteroid
越地小行星 |
| 4. | Near - earth asteroid
近地小行星 |
| 5. | Robert farquhar , mission director : i ' m happy to report that the near spacecraft has touched down on the surface of eros
罗伯特?法夸尔（飞行控制主任） ：我非常高兴地宣布“近地小行星约会”探测器已降落在厄罗斯行星的表面。 |
| 6. | In 2001 , the near spacecraft touched down on asteroid eros , after transmitting 69 close - up images of the surface during its final descent
2001年，近地小行星会合号利用减速引擎，降落爱神星表面，途中并传回多幅爱神星的近距离影像。 |
| 7. | " we believe 2003 yn107 is one of a whole population of near - earth asteroids that don ' t just fly by earth . they pause and corkscrew in our vicinity for years before moving along .
“我们认为2003yn107是那些没有仅仅从地球身边飞过的近地小行星中的一员。在继续前进之前它们暂时留了下来在我们附近盘旋了几年。 ” |
| 8. | Moreover , we will also meet the scientists of the b612 project in this film who believe they may have the solution . their aim is to send a spacecraft to land on a near earth asteroid and gently nudge it along , changing the asteroid s orbit
参与b612任务的科学家正研究发射一艘太空船，在一颗近地小行星上降落，然后缓缓把它推移，从而改变这颗小行星的轨道。 |
| 9. | Some asteroids , despite their small size , possess satellites of their own . a handful of others suffer serious perturbations by major planets and travel in highly eccentric orbits , which can send them well beyond the orbit of jupiter . the so - called near - earth asteroids cross the earth s orbit and make occasional close calls to our home planet
有些小行星体积虽小，但竟然拥有卫星而有些小行星，由于受到其他大行星的强烈摄动，轨道为极狭长的椭圆，远日点甚至延伸至木星的轨道以外近地小行星则会越过地球的轨道，不时在我们的庭园掠过，偷窥地球的一切，若有天真的登门造访旄轰！ |
| 10. | The most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth , thus they could move into inside of the earth ' s orbit , so that they might close approach or even colliside with the earth ( or other planets , such as the venus , the mars , etc . )
近地小行星轨道的最大特点是其轨道半长径与地球轨道半长径相近，或近日距离接近甚至小于日地平均距离，其运动可深人到地球轨道的内部，这将导致该类小行星与地球（还有金星、火星等）十分靠近甚至发生碰撞。 |
