Language serves as the bridge for communications and the bond for friendship.

语言是沟通的桥梁，是友谊的纽带。

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Sincerity is the bond between each other’s emotions and the bridge between mutual relationship.

真诚是感情的纽带，人与人之间的桥梁。

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Diverse civilizations, through harmonious coexistence and mutual learning, may become a bridge of friendship among peoples, a driving force for social progress and a bond for world peace.

不同文明和谐共处、交流互鉴，可以成为增进各国人民友谊的桥梁、推动人类社会进步的动力、维护世界和平的纽带。

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Most observers date the phenomenon to an Italian teen novel titled "I Want You, " published in 2006, featuring two Roman lovers who immortalized their bond on a bridge in the Eternal City and threw the key in the Tiber.

WSJ: Couples Adorn Bridges With Weighty Tokens of the Heart

Stretching north is the Golden Gate Bridge itself, saved from disaster by the heroics of Superman, James Bond and the X-Men, to name just a few.

BBC: The road to Hollywood, California