过去，商业太空运输几乎专指用一次性运载火箭将通信卫星送入地球同步轨道。
It used to be that commercial space transportation was almost exclusively about launching communication satellites into geosynchronous orbit using expendable launch vehicles.
“鑫诺二号”卫星于29日零时20分点火升空，25分钟后与运载火箭分离，进入地球同步转移轨道。
The satellite split off from the rocket about 25 minutes after its 00:20 lift-off, entering a geosynchronous transfer orbit.
“鑫诺二号”卫星于29日零时20分点火升空，25分钟后与运载火箭分离，进入地球同步转移轨道。
The satellite split off from the rocket about 25 minutes after its 00:20 lift-off, entering a geosynchronous transfer orbit.
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