英文句子结构分析以及意思,主要重点讲一下in which部分This involves the development,under budget constraints,of multi-year works and expenditure programmes in which those sections of the network likely to require treatment,a
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Under budget constraints 在预算的限制下,状语不影响句子结构,可以提前.
然后句子剩下：This involves the development of multi-year works and expenditure programmes这涉及到多年工作和经费方案的发展 【in which those sections of the network likely to require treatment,and new construction possibilites,are identified and selected.
】大括号的部分是一个定语从句,修饰前面的multi-year works and expenditure programmes,在这两个部分的网络可能需要调整,并且新的建设可能性也需要确认和选择.