Counterbore (drill)
[化] 平底扩孔钻
🧩 词语组成解析
(用平底扩孔钻)扩孔［锪孔, 镗孔, 镗阶梯孔］, 沉孔, 埋头孔
🗣️ 情景例句
Don't you think you ought to call Pete
你不觉得应该打个电话给Pete
Math is beyond me.
我对数学无能为力。
Below, the captain realized to his horror that the Titanic was sinking rapidly,
在下面，船长惊恐的地发现“泰坦尼克”号正在急速下沉，