Counterbore
(用平底扩孔钻)扩孔［锪孔, 镗孔, 镗阶梯孔］, 沉孔, 埋头孔
🔁 扩展释义
【化】 埋头孔
🗣️ 情景例句
I'm dependent on caffeine.
我对咖啡因上瘾。
How did you do it?
你是怎样达成它的？
Mrs.Richards sent her children to school and went upstairs to her bedroom.
把孩子送去上学，然后来到楼上自己的卧室。