While on the bus,write down places that interest you so you can visit them later.
原文：在公共汽车上,记下你感兴趣的景点吧,留待以后再参观
While on the bus--在公共汽车上
write down places --记下.景点
you can visit them later.--留待以后再参观
that interest you --怎么理解?