The car is running ___________ 200 kilometres per hour.汽車以每小
題目：
The car is running ___________ 200 kilometres per hour.汽車以每小時200公里的速度奔馳著
解答：
at a speed of
題目：
The car is running ___________ 200 kilometres per hour.汽車以每小時200公里的速度奔馳著
解答：
at a speed of
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