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
Mr. Carlson is busy at the moment. May I help you?
Carlson先生现在正忙着呢。我可以为你效劳吗？
You're going out of your way for us, I believe.
我相信这是对我们的特殊照顾了。
It is no use learning without thinking.
学而不思则惘。