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举世闻名的巴拿马运河是最重要的国际大通道之一,然而它在修建过程中差一点夭折,后来是一枚邮票拯救了巴拿马运河。国际
The world-famous Panama Canal is one of the most important international thoroughfares, however, it almost died during the construction process and later was a stamp that saved the Panama Canal. International