excavation [ˌekskəˈveiʃən]
n.挖掘，發掘，被挖掘之地
例句：
By this time, however the building was gone, the excavation was completed.
不過，到這時候，大樓已經拆完了，挖掘工作也完成了。
The excavation exposed some ancient ruins.
這次挖掘暴露出一些古遺蹟。
The present relief of more than 1000 ft was due to excavation.
現在的地形起伏超過1000呎是削蝕作用造成的。
The excavation of the buried city took a long time.
發掘埋在地下的城市花了很長時間。
Ground water is lowered by the drainage which can be caused by any deep excavation.
任何一種深的挖方都能造成排水現象從而使地下水位降低。
In 1949 a Mexican archaeologist began an excavation that exploded the temple theory.
在1949年一位墨西哥考古學家進行了一次挖掘，這次挖掘駁倒了廟宇論。
The Indus civilization was brought to light in excavation by Sir John Marshall in the 1920s.
印度河文化是約翰·馬歇爾爵士20世紀20年代進行的發掘中發現的。
We decided to commit ourselves and began a full-scale excavation of the site in 1977.
我們決定全力以赴，於是在1977年開始了大規模的發掘工作。
earth-rock excavation
土石方開挖
A tiny excavation may remain.
會留下一個小洞窟。
字根詞源
cav=hollow中空的
來源於拉丁文cavus，“hollow”。如：cave洞穴；excavate向外挖空，挖掘；excavator挖土機；
concave凹的。反義詞：convex凸的
