Three bridges span the Panama Canal, one of the world’s most important shipping lanes, and a fourth is planned. The first was a feat of American engineering, while European companies built the second and the third. The fourth is to be constructed by China and controversy has delayed it for several years.
世界上最重要的航道之一——巴拿馬運河(Panama Canal)上橫跨著三座橋樑，第四座正在規劃中。第一座是美國工程技術的壯舉，而歐洲公司建造了第二座和第三座。第四座將由中國建造，但因爭議已耽擱數年。
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