| 释义 |
ex·ca·va·tor
\ˈ ̷ ̷ ̷ ̷ˌvād.ə(r), -ātə-\ noun
(-s)
: one that excavates: as
a. : a worker who digs out material or digs cavities (as in quarrying or for building construction)
b. : any of various machines (as a steam shovel) for excavating earth
c. : an instrument used to open bodily cavities (as in the teeth) or remove material from them |