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drill是什么意思

drill

英[drɪl] 美[drɪl]

n.操练；钻头；军事训练；（应对紧急情况的）演习
vt.& vi.钻（孔）；打（眼）；操练；训练
vt.作…演习，操练

discipline teach practice tool prepare exercise instruct train condition

双语例句

1 . A plug had been inserted in the drill hole.: 钻孔已塞上了塞子。

2 . The drill should be slowly rotated to ensure a clean hole.: 钻头必须缓慢转动，以保证钻孔平整光滑。

3 . It took five years to drill down to bedrock.: 耗时五年才钻到了基岩。

4 . The dentist commenced to dig, drill and finally fill the offending tooth.: 牙医开始在那颗有问题的牙齿上挖洞，钻孔，直到最后把它补好。