ex·ca·va·tor /ˈɛkskəˌvetɚ/
開鑿者,打洞機,開鑿機
ex·ca·va·tor /ˈɛkskəˌvetɚ/ 名詞
挖器,剜器
Ex·ca·va·tor n. One who, or that which, excavates or hollows out; a machine, as a dredging machine, or a tool, for excavating.
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excavator
n 1: a workman who excavates for foundations of buildings or for
quarrying
2: a machine for excavating [syn: power shovel, digger, shovel]