A widow 's wish to hear her late husband 's voice again has prompted London 's subway system to restore a 40-year-old recording of the subway 's famous mind the gap announcement .

一 位 孀居老 太太希望能再听到她已故丈夫声音的愿望，使伦敦的地铁系统恢复了有40多年历史著名的mindthe gap的提示音广播。