词汇 | pneumatic drill |
释义 | pneumatic drill noun [ C ] uk/njuːˌmæt.ɪk ˈdrɪl/ us/nuːˌmæt̬.ɪk ˈdrɪl/ (US also jackhammer) 风钻 a powerful tool that is held in the hand and operates by air pressure, used for breaking hard surfaces such as roads |
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