Pre-drill
预钻孔
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
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
How many courses are you taking this semester?
这学期你选了多少课？
To learn about words in dictionary
用词典学习单词
Yes, please. That would be kind of you.
是啊。你真好！