There are several bridges in our world: wooden bridges and lians bridges, bridges of stone and bridges of stell, old bridges and new bridges, strong and weak, bridges with railings or without them.

• 世界上有许多种不同的桥梁存在：木板桥和绳索搭起的桥，石桥和钢桥，新桥与老桥，坚固与脆弱的桥，有扶把或没扶把的桥。