excavator

'ekskәveitә

n. a workman who excavates for foundations of buildings or for quarrying

n. 开凿者, 开凿机, 挖土机
[医] 挖器, 剜器

23,535

BNC 频率

23,058

使用频率

excavator 由词根 cav（表示“挖”或“洞”）和前缀 ex-（表示“从…中”或“向外”）组成，意为“挖掘机”，可以联想到它的功能是从地面挖掘出土壤。

例句

1. The excavator is used to dig deep holes for the foundation.

挖掘机用于挖掘基础的深洞。

2. The construction site was noisy because of the excavator working all day.

施工现场很吵，因为挖掘机整天在工作。

3. He learned how to operate an excavator during his summer job.

他在暑假工作期间学会了如何操作挖掘机。