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。
Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half.
他在马萨公路上以每小时100英里的速度行驶，结果被一名州警拦下。
He is doing 100 miles an hour down the Mass Pike and gets pulled over by a state trooper.
所以他们知道中微子传播的距离，他们知道中微子花了多长的时间在路上，因此他们可以测量速度。
So they know the distance the neutrinos travel, they know how long it takes them, and they can therefore measure the speed.
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