求翻译：现代地下工程发展迅速，各种典型工程著名浩瀚。世界已有数百个城市修建了地下铁路。一些工业发达国家，逐渐将地下商业街、地下停车场、地下铁道及地下管线等结为一体，成为多功能的地下综合体。是什么意思？

The rapid development of modern underground engineering, a variety of typical works of the famous vast. The world has hundreds of cities and the construction of underground railway. Some industrial countries, and gradually the underground commercial street, underground parking, underground railway a

Modern underground rapid development, vast variety of typical works well. There have been 100 world cities built by the Mass Transit Railway Corporation. Some industries will be progressively developed, underground business street, underground parking, subway and Underground pipes to be a versatile

The modern underground engineering development is rapid, each kind of typical project famous vast.The world had several hundred cities to construct the underground railway.Some industry developed country, underground knots and so on business street, underground parking garage, underground railway an

Rapid development of the modern underground engineering, various typical famous vast engineering. Construction of the mass transit railway has been in hundreds of cities in the world. Some industrialized countries, gradually will underground shopping mall, underground car parks, underground railway

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