1·It is the first probe to enter orbit around an object in the main asteroid belt between Mars and Jupiter.
它是为进入火星和木星之间的小行星带中环绕一个天体的轨道而进行的第一次探索。
2·MESSENGER is scheduled to fly past Mercury twice more before firing its thrusters to enter orbit in 2011.
2011年在MESSENGER飞船点燃推进器进入水星轨道之前，预计它还将飞越水星两次以上。
3·In order to enter orbit at Mercury, MESSENGER is traveling on a long, looping tour of the inner solar system.
为了进入水星轨道，“信使”号在内太阳系沿漫长、往复的路线旅行。
4·A Japanese probe sent on a two-year mission to Venus failed to enter orbit and may have flown passed the planet, BBC reports.
据英国广播公司消息，日本发射的一颗执行为期两年探测任务的金星探测器，未能入轨，目前可能已经飞越了金星轨道。
5·MESSENGER has zipped right by Mercury three times since being launched in 2004, and is scheduled to enter orbit around the innermost planet in March of 2011.
信使号自2004年发射升空以来已经三次掠过水星，最终计划在2011年3月进入太阳系最内部行星——水星的轨道。
6·If an alien race is not interested in taking over the Earth but very interested in wiping out human beings all they have to do is enter orbit, and drop rocks.
如果一个外星种族对接管地球不感兴趣，但就想消灭人类，他们所要做的不过是进入轨道，朝地球扔岩石罢了。
7·ScienceDaily (July 18, 2011) -nasa's Dawn spacecraft on July 16, 2011 became the first probe ever to enter orbit around an object in the main asteroid belt between Mars and Jupiter.
2011年7月16号，NASA的曙光探测器进入位于火星和木星之间的小行星带，成为进入这一地带的第一个探测器。
8·NASA expects the spacecraft to enter Mercury's orbit on March 18, 2011.
美国航天局预计，飞船将于2011年3月18日进入水星的轨道。
9·They suggest that during its orbit it would regularly enter the Oort cloud, jostling the orbits of many comets there and causing some to fall toward Earth.
他们提出，在这颗行星的轨道上，它会定期地进入奥特云，扰乱那里很多彗星的轨道，并且使得其中一些彗星掉落到去往地球的方向上。
10·Most debris should re-enter the atmosphere within 48 hours, and the remaining pieces will leave orbit within 40 days.
大多数碎片会在48小时之内重新进入大气层，而剩余的碎片会在40天内离开轨道。