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
You're welcome.
不用客气。
I won't embarrass myself by calling Mr. Lee by another's name.
我不想因为张冠李戴使自己难堪。
is the slowest and has travelled round the earth through the surface rocks.
是最慢的，是围绕地球通过表面岩石传来的。