猜一个英语谜.

问题描述:

猜一个英语谜.
You can see railways,but there are no trains on them.You can see roads,but there are no buses or cars or trucks or jeeps on them.You cansee rivers,but there are no ships or boats on them.You can see mountians,but there are no trees or flowers on them.You can see cities and towns,but there are no people or houses in them.What is is?

你可以看到铁路、但没有火车.你可以看到街道,但是没有公共汽车和轿车或卡车或吉普车.你可以看到河流,却没有船舶或船只.你可以看到山,却没有树木和花在他们身上.你可以看到城市和乡镇,但是没有人或房屋.答案,地图.
answer,map