The calculations are not perfect, so New Horizons has also fired its thrusters nine times during the nine and a half years for small course corrections, most recently two weeks ago.
计算是不完美的，因此在九年半的时间里，“新视野号”还曾九次点燃推动器，进行小的航向修正。距今最近的一次发生在两周前。
The calculations are not perfect, so New Horizons has also fired its thrusters nine times during the nine and a half years for small course corrections, most recently two weeks ago.
计算是不完美的，因此在九年半的时间里，“新视野号”还曾九次点燃推动器，进行小的航向修正。距今最近的一次发生在两周前。
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