He was driving very fast because he was ignorant of the speed limit.
他车开得很快，因为他不知道要限速。
Police also checks the speed of can if drivers are driving above the speed limit.
警察也会检查车速，看看是否驾车者是否超过规定速行车。
Police also checks the speed of can if drivers are driving above the speed limit.
警察也会检查车速，看看是否驾车者是否超过规定速行车。
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