Percussion drill
冲击钻机
🧩 词语组成解析
drill
[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;
🗣️ 情景例句
He is burning the midnight oil.
他在挑灯夜读。
Who has never tasted bitter, knows not what is sweet.
不尝黄连苦，怎知蜂蜜甜。
the study was known as Project Anehin.
安内英工程"。