Plus, scientists also found pyramids, ball game courts and water engineering, including dams and irrigation canals.
另外,科学家还在该遗址发现了金字塔和球场,以及大坝、灌溉渠等水利工程。
英语百科
Hydraulic engineering
Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage. One feature of these systems is the extensive use of gravity as the motive force to cause the movement of the fluids. This area of civil engineering is intimately related to the design of bridges, dams, channels, canals, and levees, and to both sanitary and environmental engineering.