Buur drill
[医] [牙]钻
🧩 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 shows complete indifference to others feelings.
他对别人的感受漠不关心。
When the police arrived, I was doing the housework.
当警察来的时候，我在做家务。
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？