从卫星系统的角度看，主要风险在于变轨能否精确和迅速地完成。
Judging from the satellite system, the major risk is whether the orbit changes can be completed precisely and promptly.
他用手在铁管上迅速地摸一下看它是否太烫，然后才抓住它。
He ran his hand over the pipe to see if it was hot before grabbing it.
马克斯韦尔迅速地问道，回头看了看自己桌上的电话。
Maxwell asked quickly, looking back at the phone on his desk.
马克斯韦尔迅速地问道，回头看了看自己桌上的电话。
Maxwell asked quickly, looking back at the phone on his desk.
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