是on foot，中文意思是步行常见释义

英[ɒn fʊt]

美[ɑːn fʊt]

词典

步行，走路去;

例句

The storm got worse and worse. Finally, I was obliged to abandon the car and continue on foot

暴风雨愈发猛烈，我最终不得不弃车步行。