In the Chinese tradition, the rainbow is a common symbol for marriage because the colours represent the union of yin and yang.

在中国的传统中，彩虹是婚姻的普遍象征，因为它的颜色代表着阴阳的结合。

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His breastplate further emphasizes the Greco-Roman union, displaying the Greek goddess Athena standing upon a she-wolf that was a symbol of Rome.

他的胸铠上图案是希腊女神雅典娜站立在象征着罗马的一只母狼身上——这进一步表明了希腊和罗马的联盟关系。

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The Olympic symbol, the five interlocking rings, represents the union of the five continents and the meeting of the athletes of the world at the Olympic Games.

奥林匹克的标志是五个相连的圆环，它代表着五大洲的团结和全世界运动员在奥运会上相聚一堂。

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When Mir was launched in February 1986 it was seen as a major symbol of the Soviet Union's prestige and technological advancement.

BBC: UK will spy Mir in night sky

Thanks to Miller, the Major League Baseball Players Association became a symbol of what a union could be if it had the right leadership and vision for unity.

FORBES: Friends and Colleagues Pay Tribute to Baseball's Marvin Miller, a Giant of American Labor