“InspectorSandstothecontrolroom,please.”Ifyoueverheart...
問題詳情： “InspectorSandstothecontrolroom,please.”IfyoueverhearthatataBritishtrainstation,don’tpanic.Butyoumightappreciateknowingthathisisacodewordmeanttoinformstaffthatthereisanemergencysomewherei...