届时地面控制人员将点燃助推器，把卫星送入预定轨道。
Ground controllers will then fire the booster, sending the satellite into its proper orbit.
猎鹰9号的第一级有9个引擎，即使一个或多个引擎故障，它仍然可以到达预定轨道。
With nine engines on the first stage, Falcon 9 can reach orbit even if one or more fails.
在其旅行过程中的每一年，该探测器都要比上一年多偏离预定轨道8000英里。
In every year of travel, the probes veer 8000 miles further away from their intended trajectory.
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