1610s, "action of excavating," from Latin excavationem (nominative excavatio) "a hollowing out," noun of action from past participle stem of excavare "to hollow out" (see excavate). Meaning "an excavated place" is from 1779.
权威例句
1. Our new habitation was an excavation made in the earth.
我们的新居是在地里挖出的一个洞。
2. The bad weather has hung up the work of excavation.
天气不好耽误了挖掘工作.
3. The excavation of the buried city took a long time.
发掘埋在地下的城市花了很长时间.
4. More discoveries were made as the excavation proceeded.
挖掘期间陆续有所发现.
5. The dentist filled several cavities in my teeth.