1.Galileo was forced to recant his assertion that the earth orbited the sun.

1.伽利略被迫放弃球围绕太阳转断言。

2.Let's pretend we're on the spaceship orbiting round the earth!

2.让我们假装是在轨道绕球运转宇宙船上!

3.The mass was calculated by timing the orbit of Eris' moon Dysnomia.

3.通过对厄斯卫星--戴丝诺米娅运行轨道计时后计算出了厄斯质量。

4.A plane orbited over the landing field.

4.有机在机场上空盘旋。

5.The earth orbits the sun once every 365.25 days.

5.球每365.25天绕太阳轨道圈。

6.They put a weather satellite into orbit round the earth.

6.他们把颗气象卫星送入环绕球轨道。

7.Mars, Venus and the other planets move in eccentric orbits.

7.火星、金星及其他行星不正圆轨道运行。

8.Our satellite itself will orbit around the moon for a period of two days.

8.我们人造卫星本身将绕月球运行两天时间。

9.The orbit of the artificial satellite has an apogee of 200 miles from the earth.

9.这个人造卫星轨道，其最远点在离球200英方。

10.Mercury orbits the Sun.

10.水星环绕太阳运行。

11.Also, as our sun orbits the galactic center it may sweep through areas of interstellar dustiness.

11.同样，因为太阳位于重力中心，它可能会清除有星际尘埃区域。

12.The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.

12.第个放置在对静止轨道卫星是1963年美国航空暨太空总署发射同步传输卫星.

13.The repeated thrust applications at apoapsis would raise periapsis from inside to outside the stationary orbit.

13.重复在远心点施以推力，会将近心点由同步轨道内提升到同步轨道外。

14.It orbits an inhospitable ice world named Orto Plutonia, which was a protectorate of the Pantorans.

14.它围绕颗不适宜居住冰冻星球奥托普卢托尼亚旋转，奥托普卢托尼亚是潘托拉人保护。

15.Apollo 8 was a test in which an Apollo moonship was put into orbit around the moon.

15.太阳神八号是将艘登月艇纳入绕月球轨道项试验。

16.John Glenn, the first American to orbit the earth, carried pureed applesauce in squeezable tubes on his initial space flight.

16.3．约翰?格伦，第位绕环行美国宇航员，在他首次行时带有软管包装苹果酱。

17.The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.

17.人造球卫星轨道由于大气阻力和球引力场等因素摄动,其形状和近点位置将不断改变。

18.Abstract.The first orbit maneuver of lunar orbit insertion (LOI) must be implemented at the first perilune of the spacecraft flight to the moon.

18.月球捕获控制第次制动必须在卫星向月球第近月点完成。

19.After completing lunar swingby maneuvers, the A spacecraft is intended to orbit the Sun "Ahead" of planet Earth, and the B spacecraft "Behind".

19.在完成对探测器变轨后，A船将在球前方绕行太阳，而B船则在"后方"绕行。

20.It is a tiny joyrider from the rubble stream surrounding the solar system that broke free and orbits the sun in a tilted, elongated orbit.

20.它是从围绕太阳系而又自由浮动堆剩余物中游走出来颗星。它体积微小，以倾斜、细长轨道围着太阳运转。