求翻译：中国历史上的水利工程之中，著名的有都江堰、灵渠、坎儿井隋唐大运河，水利水电工程的专业前景，就业方向及主干学科。是什么意思？

The history of China's water conservancy among the famous are Dujiangyan, Lingqu, Kaner Sui and Tang Grand Canal, water conservancy and hydropower engineering professional prospects, job orientation and backbone disciplines.

The water conservancy project in China's history, the famous in Dujiangyan, Pub. , qanats 581-618Grand Canal, water conservancy and hydropower engineering professional prospects and trunk disciplines, employment direction.

In the Chinese history hydraulic engineering, famous has Dujiang weirs, the spirit ditch, the ridge well Sui and Tang dynasties Grand Canal, the water conservation water and electricity project specialized prospect, the employment direction and the branch discipline.

Hydraulic engineering in Chinese history, famous, and efficacious Canal dujiangyan project, Karez in sui and Tang dynasties Grand Canal, water conservancy and hydropower engineering professional prospects, employment and discipline of skeleton.