excavation [ˌekskəˈveɪʃn]

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n.挖掘，发掘；被挖掘之地

the act of digging;

The bad weather has hung up the work of excavation. 天气不好耽误了挖掘工作。
The excavation exposed some ancient ruins. 这次挖掘暴露出一些古遗迹。