我让发动机一直开着，因为可能需要快速离开。
I kept the engine running because it might be necessary to leave fast.
化妆品为那些需要快速转型或改造的人创造了一个个奇迹。
Cosmetics have created miracles for those who need rapid transformation or transformation.
这种机器被设计用于最需要快速且准确的公告的地方，如运输站、机场和名胜古迹。
The machine was designed to be used in places like transport stations, airports and places of interest where quick and exact announcements are needed most.
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