There are, at present, three difficulties in western countrysides, such as short of funds, great difficulty in construction and long time limit for a project.
阐述了目前西部农村建桥的三大困难：建桥资金缺、施工难度大、建设工期长；
The development of the oil field on the North Slope of Alaska and the construction of the Alaska pipeline are examples of the great expense and difficulty involved in new oil discoveries.
阿拉斯加北坡油田的开发，以及阿拉斯加地区输油管道的建设，就是在新石油资源的勘探中涉及到巨额开支和巨大困难的例子。
Narrow in its place, it is unprecedented that the degree of difficulty of construction technology is great. The deep foundation pit is a highly difficult geotechnical engineering subject.
其场地之狭窄，施工技术难度之大是前所未有的，深基坑工程是一个高难度的岩土工程技术课题。
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