🧩 词语组成解析
a. 掌上型；手持型
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
She can't sit around and do nothing.
她总不能闲坐着无所事事呀。
Set a thief to catch a thief.
以毒攻毒。
but she is never sufficiently strong-minded to be able to stop the practice.
但她又缺乏足够坚强的意志把这一收集活动停下来。