求翻译：日本明石海峡大桥是世界上目前最长的吊桥，大桥于1988年5月动工，1998年3月竣工，其主跨长1991米（960+1991+960），全长3911米，是三跨二铰加劲桁梁式吊桥.是什么意思？

Japan's Akashi Kaikyo Bridge is the world's current longest suspension bridge, the bridge started in May 1988, completed in March 1998, its main span of 1991 meters (960 +1991 +960), total length of 3911 meters, is a three-span two hinge stiffening truss-type bridge.

正在翻译，请等待...

The Japanese alum channel bridge was in the world the present longest hanging bridge, the bridge begins construction in May, 1988, in March, 1998 was completed, its main span length 1991 meters (960+1991+960), the span 3911 meters, were three cross two articulations try harder the braced girder type

Japan is currently the longest suspension bridge in the world of Akashi-Kaikyo Bridge, the bridge began in May 1988, completed in March 1998, its main span 1991 meters long (960+1991+960), is 3,911 meters long, is a three-span two-hinged stiffening girder suspension bridges.

The straits bridge of the bright stone in Japan are the longest suspension bridge at present in the world, the bridge was started building in May of 1988, completed in March of 1998, it was mainly stepped 1991 meters long (960+1991+960), total length is 3911 meters, stepped and cut with scissors and