开掘运河

例句：

1. 1. The engineers were tasked with the difficult task of excavating a new canal.
   工程师们被分配了挖掘一条新运河的艰巨任务。
2. 2. The construction of the canal was a significant milestone in the city's development.
   运河的建设是该市发展的一个重要里程碑。
3. 3. The team successfully completed the excavation of the canal, which will greatly benefit the local economy.
   团队成功地完成了运河的挖掘工作，这将极大地促进当地经济的发展。