A far simpler example is a boy riding his bike .The bike, the boy ,the street(with all its traffic conditions),the weather ,the time of day, and even other children make up the system of boy on his bike.
A far simpler example is a boy riding his bike .The bike, the boy ,the street(with all its traffic conditions),the weather ,the time of day, and even other children make up the system of boy on his bike.
脚踏车、男孩、街道(与它所有的交通情况),天气，日子的时候和甚至其他的孩子组成男孩在他的脚踏车上的系统.