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1·Europe's SMART-1 entered lunar orbit in 2003, and the ESA wants to go back.

欧洲的“智能1号”2003年就进入了环月轨道，并且欧洲空间局拟定了新的计划。

2·Orion will operate on its own in lunar orbit, standing by for the return trip to Earth.

猎户舱将独自己在月球轨道运行，等候重返地球。

3·A successful launch will make India the third Asian nation to place a satellite in lunar orbit.

如果发射成功，印度将成为第三个将卫星送入月球轨道的亚洲国家。

4·The antenna employs a dual gimbal mechanism to track the earth station when the spacecraft is in lunar orbit.

该天线采用了双万向接头结构，以便航太器在月球轨道跟踪地球站基站。

5·Being able to operate autonomously in lunar orbit will be a key factor in Orion being able to support longer missions.

猎户在月球轨道自动运行是他能够担当长期使命的一个关键因素。

6·They could go into lunar orbit or into solar orbit halfway between the Earth and Venus, or one day even land on the moon.

他们可能飞到月球轨道或者地球与金星之间的太阳轨道，甚至有一天降落在月球上。

7·In fact, this is what almost happens, except that the nodes of the lunar orbit are gradually shifting their orientation in space.

实际上差不多就是这样发生的，只不过月球轨道交点的空间方位有渐移运动。

8·India's own lunar orbiter descended to about 60 miles in 2008, he said, but was forced to return to a more stable, 125-mile-high orbit.

他透露2008年印度的月球卫星曾下降到60英里处，但又被迫回到了更为稳定的125英里高的轨道上。

9·A main aim of the lunar motion theory in ancient China is to calculate the longitude of the Moon at the lunar orbit at any given time.

计算月亮的白道经度，是中国古代数理天文学之月亮运动理论的核心内容之一。

10·The rocket will shoot the craft into the trans-lunar orbit, after which the satellite is expected to reach the Moon in about five days.

该火箭将把这个飞行器送入环月轨道，此后该卫星有望于五天后抵达月球。