San Francisco is one of the most famous American cities. 旧金山是美国最著名的城市之一。

　　It is located on the west coast of the USA and it has a lot of things to see. 它坐落于美国西海岸并有很多可参观的东西。

　　The Golden Gate Bridge is one of them. 金门大桥就是其中之一。

　　The bridge was built in 1937. 该桥建于1937年。

　　Around 1849, a lot of gold was found near San Francisco and many people rushed to San Francisco. 1849年左右，在旧金山附近发现了大量的黄金，为此很多人火速赶往旧金山。

　　We called this the "gold rush". 我们称这次事件为“淘金热”。