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
I graduated from Nanjing University.
我从南京大学毕业的。
It'll be easier for us to get down to facts then.
这样就容易进行实质性的谈判了。
Some of them were as big as marbles.
有的钻石像玻璃球那么大。