求翻译：我的老家，50年前没有小汽车、火车、轮船也没有飞机和工厂。大家都是骑单车或走路上班和上学。但现在大家都坐汽车、地铁、公共汽车上班和上学了。是什么意思？

My home, 50 years ago, no cars, trains, ships or aircraft, and factories. We are riding a bicycle or walking to work and school. But now we have to work by car, subway, bus and go to school.