🧩 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
I love this.
我喜欢这个。
The data confirm that this product is safe and effective.
数据证实此种产品安全有效。
from which can be seen the strata the drill has been cutting through.
从中能看出钻头所钻透的地层。