A study by researchers at Royal Holloway, University of London reveals that primary school children cannot accurately judge the speed of vehicles travelling faster than 20 MPH.
英国伦敦大学皇家霍洛威学院的一项研究表明，小学儿童不能准确判断行驶速度大于每小时20英里的车辆的速度。
A study by researchers at Royal Holloway, University of London reveals that primary school children cannot accurately judge the speed of vehicles travelling faster than 20 MPH.
英国伦敦大学皇家霍洛威学院的一项研究表明，小学儿童不能准确判断行驶速度大于每小时20英里的车辆的速度。
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