excavation
/ˌekskəˈveɪʃən/noun
mass noun
1- the action of excavating something, especially an archaeological site（尤指古代遗址的）挖掘; 发掘：
the methods of excavation have to be extremely rigorous
挖掘方法必须极其严格
count noun students often participate in excavations.学生经常参加发掘工作。
1.1
- count noun a site that is being or has been excavated挖掘（或发掘）地。