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——巴拿马运河(Panama Canal)上横跨着三座桥梁，第四座正在规划中。第一座是美国工程技术的壮举，而欧洲公司建造了第二座和第三座。第四座将由manbetx3.0 建造，但因争议已耽搁数年。
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