the_average_speed_有道手机词典

1.The average speed for errors was 4 meters per second.
产生误差的平均速度是每秒4米。
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2.Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half.
有研究表明，在道路上画上笔直的横杆，可以在开始将司机的平均速度降低一半。
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3.And I will show you now what is the average speed between time zero and four.
现在我要给你们看的是，0到4秒间的，平均速率。
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