Firming drill
[机] 形成钻
🧩 词语组成解析
vt.& vi. 使坚固（firm的现在分词形式）
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
Scene: Tom and his wife have invited Carl and David for dinner.
场景：汤姆和他夫人邀请卡尔和大卫吃晚饭。
Don't mention it.
不必谢。
We had to climb over some rocks and it started to rain.
我们不得不爬过一些岩石，这时开始下起雨。